Updates

• 
  Tanveer Tausif Ratul commented on Fatima Ahmed's classified listing.

  

  The Journey of the Ladybug - $7 Science Quiz

  The Journey of the Ladybug
   
  
  I have black dots on my red body. The shape of my body is round or half-sphered. I have six short legs and antennae. You may not know this, but I use my attractive colors and spots to fend of my predators! People call...

  • November 14, 2021

  • Digbijoy Azad likes this.
  • View all 13 comments
  • 
    Tanveer Tausif Ratul To live in a closed eco-system,an animal/plant must need air & foods.While putting the ladybug in the container,some air entered into the container and was trapped inside.
    That air obviously contained some oxygen and CO2.Plants
    need CO2 to live.They...  moreTo live in a closed eco-system,an animal/plant must need air & foods.While putting the ladybug in the container,some air entered into the container and was trapped inside.
    That air obviously contained some oxygen and CO2.Plants
    need CO2 to live.They inhaled the CO2 and exhaled the
    Oxygen.With the Oxygen released by the plants,the ladybug survived and it exhaled CO2.The plants then again used the CO2 and exhaled Oxygen.In this way,it continues in a cycle.
    For making food,plants need 4 things: water,mineral,CO2
    and sunlight.Water and mineral is available in the wet soil.CO2 is available in the air,whereas,sunlight is also saying ‘hi’ there!So?Food prepared!
    Again,the main food of ladybug is small insect called ‘Aphid’,which sucks the juice of plants and live there.So, ladybug is getting enough food for her.This is how they both are surviving in the closed container.  less

    • November 14, 2021
  • 
    Zarin sadaf snigdha Before we answer this question we need to get enlightened on a biological term, symbiosis. Symbiosis means interaction between two dissimilar organism where both benefit from being with each other. When we are putting the ladybug and the plants inside...  moreBefore we answer this question we need to get enlightened on a biological term, symbiosis. Symbiosis means interaction between two dissimilar organism where both benefit from being with each other. When we are putting the ladybug and the plants inside the glass jar they are getting sealed from the rest of the world. The ladybug respires which releases carbon dioxide, which is taken up by the leaves of the plant. The leaves also get sufficient sunlight from the sun as the glass is transparent. And it also gets minerals from the charcoals in the soil ans as the soil was wet plants can absorb water from it too . The plants use this for photosynthesis and to produce oxygen and glucose. The glucose is used by the plants for food and the oxygen is used by the ladybug for respiration. The ladybug also feeds on the plants to survive. This is how the plant and the ladybug depends on each other to survive. This is known as symbiosis and this is why the plant and the ladybug both survived even if the container...    less

    • November 14, 2021
  • 
    sadia islam safa In that container,an small ecosystem was created. Plants produce their own oxygen during photosynthesis and by using that, bug is still alive. Bugs breath through openings in the thorax and abdomen called spiracles. For plants,those gravels will hold...  moreIn that container,an small ecosystem was created. Plants produce their own oxygen during photosynthesis and by using that, bug is still alive. Bugs breath through openings in the thorax and abdomen called spiracles. For plants,those gravels will hold water and increase humidity. Charcoal increases the soils ability to hold onto plant nutrients and from wet soil plants get water. So using all of that in the process of photosynthesis,plant is growing and producing foods,oxygens and heat energy. This is how plants and the ladybug are still surviving in that closed container.  less

    • November 14, 2021
  • 
    Shadman Chowdhury The ladybug and plants inside the closed container can still survive because of photosynthesis. Plants have a process called photosynthesis which requires CO2 and sunlight to produce carbohydrates, water and oxygen for the plants' growth. Those plants...  moreThe ladybug and plants inside the closed container can still survive because of photosynthesis. Plants have a process called photosynthesis which requires CO2 and sunlight to produce carbohydrates, water and oxygen for the plants' growth. Those plants need carbon dioxide to grow (plants absorb carbon dioxide through their stomata). For our container analogy, we can say that the plants inside the container are using photosynthesis to create their own food supply from sunlight and CO2. The gravel supplies nutrients such as nitrogen, magnesium and phosphorus which play important role in plant growth. Charcoal also acts like gravel by keeping up humidity levels for optimum growth conditions. The ladybug eats the plants, but both organisms benefit from receiving nutrients from each other.  less

    • November 14, 2021
  • 
    Digbijoy Azad The ladybug is living in an ecosphere. However, the ladybug is not alone. Bacteria, protozoa, algae, smaller worms, and plants are also crucial members of the jar.
    Few things ladybug needs to live-
    -Oxygen.
    -Food...  moreThe ladybug is living in an ecosphere. However, the ladybug is not alone. Bacteria, protozoa, algae, smaller worms, and plants are also crucial members of the jar.
    Few things ladybug needs to live-
    -Oxygen.
    -Food source.
    -Clean air that does not contain harmful gas like ammonia.
    -Suitable humidity
    -Available water source
    The jer fulfills the requirements like this-
    *Plants and algae give oxygen and get Co2 from ladybugs and other organisms.
    *Plants get energy from the sun and provide food for organisms. The energy stays almost the same as bacteria and protozoa decompose dead organisms and fallen leaves.
    *Bacteria and protozoa break down the waste and make ammonia into nitrate that plants can take. So the air stays clean.
    *Charcoal removes excess humidity.
    *Water evaporates but comes back to the system like rain.
    The jer completes the energy cycle, Co2 cycle, Oxygen Cycle, Hydrogen cycle, decomposition, and controls humidity and air quality. So, Ladybug and her friends can live happily by supporting each other.  less

    • November 14, 2021
• 
  Tanveer Tausif Ratul liked Fatima Ahmed's photo.

  

  Tanveer, we just read your Physics project: Dilemma in Tanguar Hoar. Four words - excellent description and figure. It just explained everything as simply as possible in such an interesting way with a diagram from real life which really helped us to...  moreTanveer, we just read your Physics project: Dilemma in Tanguar Hoar. Four words - excellent description and figure. It just explained everything as simply as possible in such an interesting way with a diagram from real life which really helped us to grasp the concept. Well done! Here in Tanveer full answer and you can click on the following screenshot to see all details: https://drive.google.com/file/d/1toriTQlwUmQKC4sh09gGu07anD_-MK2k/view?usp=sharing  less

  • August 30, 2021

  • Tanveer Tausif Ratul likes this.
• 
  Fatima Ahmed: Tanveer, we just read your Physics project: Dilemma in Tanguar Hoar. Four words - excellent description and figure. It just explained everything as simply as possible in such an interesting way with a diagram from real life which really helped us to...  moreTanveer, we just read your Physics project: Dilemma in Tanguar Hoar. Four words - excellent description and figure. It just explained everything as simply as possible in such an interesting way with a diagram from real life which really helped us to grasp the concept. Well done! Here in Tanveer full answer and you can click on the following screenshot to see all details: https://drive.google.com/file/d/1toriTQlwUmQKC4sh09gGu07anD_-MK2k/view?usp=sharing  less

  

  • August 29, 2021

  • Tanveer Tausif Ratul likes this.
• 
  Tanveer Tausif Ratul commented on Fatima Ahmed's classified listing.

  

  Games R' Us Giraffes - $7 Mathematics Quiz

  Games R' Us Giraffes - $7 Mathematics Quiz
   
  
  David’s project deadline was approaching soon. That day, he was still sitting at his desk after office hours and was still thinking the best way to finish his project on time. He was exited after...

  • July 31, 2021

  • Zarin sadaf snigdha likes this.
  • View all 14 comments
  • 
    Nirjona Akter Why this formula will work?
    
    This method will work when all the sides are of the same length. Then, we can find the volume of a cube just knowing the measurement of only one side. If a cube has side length "x" then Volume = x × x × x a which results in...  moreWhy this formula will work?
    
    This method will work when all the sides are of the same length. Then, we can find the volume of a cube just knowing the measurement of only one side. If a cube has side length "x" then Volume = x × x × x a which results in the formula, Volume = x³. This is where we get the term called"cubed". When we use power to the 3 over something, we call it cubed. When units of Measure are calculated, we find the volume of an object, and the units are cubed. This means that if the measurements of the sides are in miters, then the answer will be in cubed miters.  less

    • July 31, 2021
  • 
    Shaikh Nafisa Binte Fahad ''How will it work?''
    In question, it represents the subject of ‘similarity statistics’. This means that the ratio of height, length, and width will be the same.
    In the equation, we are seeing that the dimension of both the values are different which...  more''How will it work?''
    In question, it represents the subject of ‘similarity statistics’. This means that the ratio of height, length, and width will be the same.
    In the equation, we are seeing that the dimension of both the values are different which needs to be equal. Over here, the height is a one-dimensional unit(meter) but the volume is three-dimensional (meter^3). So, we need to cube it to make it evenly dimensional.
    ''Why would it work?''
    Otherwise, it is not according to the rules and the answer will be wrong.
    So, given,
    Height of small giraff= 4m
    = 4 x 4 x4 = 216m^3
    Height of big giraff= 6m
    = 6x 6 x6 = 64 m^3
    Volume of big giraff= 5400m^3
    and, let the volume of small giraffe be 'x' m^3.
    Now. we know,
    the formula of similarity,
    Height of big giraffe/Height of small giraffe=Volume of big giraffe/Volume of small giraff.
    ==> 216/64 = 5400/ 'x'
    ==>216x =345600
    ==> x =1600
    Therefore, the volume of the small giraff is 1600 m^3.  less

    • July 31, 2021
    • -
    • 1 likes this
  • 
    Noorjahan Binte Farhana There is given Small and tall giraffe height. And the tall giraffe volume is 5400 meter queb. volume= length × width × height.
    consume the length X and width Y for tall and small giraffe
    so, for tall giraffe...  moreThere is given Small and tall giraffe height. And the tall giraffe volume is 5400 meter queb. volume= length × width × height.
    consume the length X and width Y for tall and small giraffe
    so, for tall giraffe X*Y*6=5400
    XY=5400/6
    XY= 900
    Now, for small giraffe volume X*Y*4
    900*4=3600 [ we have find out XY=900]
    The tall giraffe is 1.5 tall more than small giraffe.
    as, 3600*1.5=5400  

    • August 1, 2021
  • 
    Jesmin Akhter given,
    Bigger giraff height = 6m
    And the volume of bigger giraff = 5400m^3
    we know a formula...  moregiven,
    Bigger giraff height = 6m
    And the volume of bigger giraff = 5400m^3
    we know a formula that,
    volume = lenght * wide * hight
    let, lenght = a, wide = b
    so, volume = lenght * wide * hight
    => 5400m^3 = a * b * 6m
    => ab = 5400m^3 / 6m
    => ab = 900m^2 ...........(i)
    given, Smaller giraff hight = 4m
    know we have to be findout the volume of smaller giraff.
    let, volume of smaller giraff = x
    leangth = a
    wide = b
    we know,
    valume = length * wide * hight
    => x = ab * 4m
    => x = 900m^2 * 4m [ puting the value of a and b from equation...    less

    • August 1, 2021
  • 
    Nur E ferdus Monika matin At first, it is mentioned that both giraffes are similar. That means the ratio of height, length,
    width, and the dimension of each part will be the same for the two Giraffe. The volume of a
    three dimensional figure is- volume= length X width X height so,...  moreAt first, it is mentioned that both giraffes are similar. That means the ratio of height, length,
    width, and the dimension of each part will be the same for the two Giraffe. The volume of a
    three dimensional figure is- volume= length X width X height so, Volume(Small)/Volume
    (Large)=Length(s)×width(s)×Height(s)/Length×width×Height
    Height(s)/Height=4/6=2/3 So, Length(s)/ Length=2/3 and width(s)/width=2/3
    Volume(Small)/Volume (Large)= (2/3) ×(2/3)×(2/3) Volume(Small)= (8/27)× Volume (Large)
    = (8/27) × 5400 m^3 = 1600 m^3 This formula will work because If we calculate volume part
    by part and make a sum to get the total volume of the small giraffe as it is irregular-shaped,
    it will remain unchanged because each part maintains the same ratio of 2/3 with the large
    Giraffe as both are similar.  less

    • August 1, 2021
• 
  Tanveer Tausif Ratul commented on Fatima Ahmed's classified listing.

  

  Anwar's Different Perspective - $5 English Writing project

  Anwar's Different Perspective - $5 English writing project
   
  
   Anwar just completed the last level of his Mario Cart video game. Unlike all other students in his class, Anwar was an introvert and did not look like the typical 9th grade studen...

  • July 14, 2021

  • View all 22 comments
  • 
    Sumaiya Amir 'LOSER', for me this term has a very deep meaning. This four letter word isn’t a comfortable thing in someone's life. You have to go through a series of depressions, complications and sleepless nights if this term ever get connected with you. Well,...  more'LOSER', for me this term has a very deep meaning. This four letter word isn’t a comfortable thing in someone's life. You have to go through a series of depressions, complications and sleepless nights if this term ever get connected with you. Well, like everyone else, I also have many situations in my life where I considered myself as a complete loser.You know being an introvert makes you disconnected from social life and it's not a joke. Being like that I was ditached from every success I could have achieved earlier. I was a shy person who could not even order a food for herself in any restaurant. I was someone who used to know the answers of most of the questions in school but always hesitated to talk. But you can not be like this forever right? In this century if you want to be successful, you have to talk and discuss. You have to share your opinions so that other persons can know your value. My university clubs did a great job to pull out the talents of me. They forced me to talk everyday and...    less

    • July 14, 2021
  • 
    Sumaiya Amir share my opinions with everyone. After 3months of continuous practice, I was selected as an anchor of our varsity convocation program. A girl who could not even talk became an anchor? Yes that is right. I had my will to change the awkwardness inside me...  moreshare my opinions with everyone. After 3months of continuous practice, I was selected as an anchor of our varsity convocation program. A girl who could not even talk became an anchor? Yes that is right. I had my will to change the awkwardness inside me and I succeed. If you want something truly, you will achieve that no matter what. Just have patience. You will surely be a winner of that once you thought would be your loosing point.  

    • July 14, 2021
  • 
    Nanjiba Naowar Personally I was an introvert and a bookworm. I love writing. But shyness never lets me publish it. People used to say I am unable to make others understand my thoughts. I was Bullied for it. Last year I felt depressed but didn't find anyone to share my...  morePersonally I was an introvert and a bookworm. I love writing. But shyness never lets me publish it. People used to say I am unable to make others understand my thoughts. I was Bullied for it. Last year I felt depressed but didn't find anyone to share my pain. So I expressed my thoughts and pain in words on my facebook timeline. Alhamdulillah, Not only it cures my heavy heart but also friends start liking my writings and give compliments. Then one day, a friend asked me to do an internship as a content writer. I had no idea about it. I googled, learned, did low paid writing jobs, sent CVs, gave interviews and got rejected many times. Every time I fail I learn something new from my mistakes. Before the year ends, alhamdulillah, I have 2 paid freelancing writing works, one internship. Even i won a physics quiz of coolinventors though I have been a business student from the very beginning. I have many 'loser to successful' stories, but 'how an introvert girl becomes successful in sharing her thoughts' is...    less

    • July 14, 2021
  • 
    Raju Loodh It was my college days story. That time I was not so good at English even I did not know how to write in proper way. We had an English Named ala Uddin. Every day while he come to class he used to tell. Just write something in English. It does not matter...  moreIt was my college days story. That time I was not so good at English even I did not know how to write in proper way. We had an English Named ala Uddin. Every day while he come to class he used to tell. Just write something in English. It does not matter how much mistakes you do. I will not give you punishment if you do any mistake but i will punish you if you don't write. Everyday i used write something in English. At begging i did many mistakes and he solved those mistakes and motivated me. Gradually, i started improving my English and at last I got chance one of the best public university in Bangladesh just because of my English. It was my college days story. At that time I was not so good at English even I did not know how to write properly. We had an English teacher Named ala Uddin. Every day he used to tell. Just write something in English. It does not matter how many mistakes you do but you have to write. I will not give you punishment if you do any mistakes but I will punish you if you don't...    less

    • July 15, 2021
  • 
    Shaikh Nafisa Binte Fahad The famous world-class boys of the BTS band also took part in their fight and it was heartbreaking to hear their story. The boys were about to give up and almost lost hope. But they stood together and today their fight has led to a worldwide reputation...  moreThe famous world-class boys of the BTS band also took part in their fight and it was heartbreaking to hear their story. The boys were about to give up and almost lost hope. But they stood together and today their fight has led to a worldwide reputation as one of the best and most well-known K-pop bands in the world.
    Taehyung was a son of a farmer; RM's mom used to pressure him about his studies, career; Suga, who loved music but his family always burnt all his hard work as they wanted him to focus on his studies.
    The band has almost spread out because they don’t have enough money to continue, no funds, so a few members had to choose between food and transportation and do two things. Behind their confident presence, they were constantly battling self-doubt and frustration. In fact, there is a difference even if everyone loses. "The real losers in life are not those who try and fail, but those who fail to try."  less

    • July 16, 2021
• 
  Tanveer Tausif Ratul commented on Fatima Ahmed's classified listing.

  

  The weird music of Sarah and Ali - $5 Physics quiz

  The weird music of Sarah and Ali - $5 Physics quiz
   
  
  Along with her musical team band, Sarah wants to become a famous and worldwide selling artist. She is incredibly passionate about musical instruments, particularly in the acoustic guitar. Aside...

  • July 14, 2021

  • View all 8 comments
  • 
    Shadman Chowdhury When they were playing guitar, a loud thumping noise was produced due to the vibration of their playing, it caused some sort of interference. This would explain why when they are playing at the same time, there was an odd but clear sound that they were...  moreWhen they were playing guitar, a loud thumping noise was produced due to the vibration of their playing, it caused some sort of interference. This would explain why when they are playing at the same time, there was an odd but clear sound that they were not supposed to produce.
    
    The reason for this is because whenever any objects vibrate or moves, it produces interference. When one object moves in a particular direction or changes its motion suddenly, there will be waves forming in all directions. If another object has these waves hitting them as well while moving around by itself then there will be interference which will result in having waves being lost or changed.
    
    The concept of physics used is applied in the principle of interference. When two or more objects cause vibration or motion, there will be waves colliding with each other and either being canceled out or changed by a small fraction. This is an example of interference that can lead to many different problems down the road.  less

    • July 13, 2021
  • 
    Zarin sadaf snigdha To answer this question we need to look at the principle of superposition of waves which states when 2 or more waves meet at a point the displacement or amplitude is equal to the vector summation of the amplitude of the individual waves. Here when they...  moreTo answer this question we need to look at the principle of superposition of waves which states when 2 or more waves meet at a point the displacement or amplitude is equal to the vector summation of the amplitude of the individual waves. Here when they both play the guitar simultaneously both of them produce waves of similar Frequency. These waves are produced interact with eachother & produce constructive & destructive superposition. This leads to amplitude at a few points to become double as displacement at that point is high. This leads to the loud noise as high amplitude is responsible for high sound. To avoid this they need to play different cords or change the frequency of the waves produced.  less

    • July 13, 2021
  • 
    Tanveer Tausif Ratul The above phenomena is related to the terms-Interference and Superposition.When Sarah & Ali attempted to play
    the acoustic guitar synchronously,two sound waves were generated from two guiters at the exact same time.I mean each one produced the same...  moreThe above phenomena is related to the terms-Interference and Superposition.When Sarah & Ali attempted to play
    the acoustic guitar synchronously,two sound waves were generated from two guiters at the exact same time.I mean each one produced the same sound wave and both the waves were in same phase.Now,what is phase!
    
    
    If two waves have the same amplitude,same frequency and same wavelength,then it is said that both the waves are in same phase.
    
    
    So when two or more same-phased
    waves arrive at the same point (when both started playing their guitar),the waves superimpose themselves on one another.Actually the amplitudes of the wave superimpose.This term is known as-Superposition.So,the resultant wave will simply be the addition of the amplitudes of the individual waves.This superposition
    produces Constructive Interference which produces a wave that has twice the amplitude of the individual waves.The higher the amplitude,the louder the sound
    will be.
    
    
    On the other hand,it can be said very easily...    less

    • July 14, 2021
  • 
    Tanveer Tausif Ratul that,when two waves are in opposite phase (their amplitude direction is opposite) & the superimpose on
    each other,the resulting amplitude is zero which is known as-Destructive Interference.It means the two waves cancel each other.Therefore,no sound will...  morethat,when two waves are in opposite phase (their amplitude direction is opposite) & the superimpose on
    each other,the resulting amplitude is zero which is known as-Destructive Interference.It means the two waves cancel each other.Therefore,no sound will be produced.
    
    From this discussion,it has been realized that when Sarah & Ali started playing at the same time,the sound waves generated from their instrument superimposed on each other and created the wave which had twice the amplitude of that individual wave.So a loud thumping noise was
    generated.But their ear were get used to it slowly.So,it didn’t affect that much later  less

    • July 14, 2021
  • 
    Hasnain Tariq actually this happens due to resonance frequency . this is the frequency where superposition of waves can generate. same happen in the case of Sarah and Ali frequency of both musical instrument match suddenly this create loud thumping noise.

    • July 14, 2021
• 
  Tanveer Tausif Ratul commented on Fatima Ahmed's classified listing.

  

  Andy Morales and The Rain - $5 Physics Quiz

  Andy Morales and the Rain - $5 Physics Quiz
   
  It's 6p.m, time to leave the railway station - Andy thought to himself, with a big sigh. Living a lonely life since the demise of his wife two years ago, everything to him seemed monotonous and tedious....

  • July 13, 2021

  • Hasnain Tariq likes this.
  • View all 18 comments
  • 
    Syeda Anmol Andy used the ideology of moment. Moment of force is the idea to make a body to rotate on a pivot. Moment has a simple rule that is the closer you are to the pivot or the point the more energy you would require to rotate the body. This rule is obeyed by...  moreAndy used the ideology of moment. Moment of force is the idea to make a body to rotate on a pivot. Moment has a simple rule that is the closer you are to the pivot or the point the more energy you would require to rotate the body. This rule is obeyed by many objects which we use in our day-to-day life. Like a spanner handle is placed far from the pivot to rotate the nut or nail easier with less force. Similarly, in this case the pivot is the root of the tree, it is the turning point for the tree, when the crowd gathered they applied force very close to the pivot or the root this cause the tree not to budge but when Andy positioned the force on the far end from the pivot it made it easier for the crowd to move the tree. In simple, we can sum it up that the greater the distance the less the force needed and the smaller the distance the more force is needed which this scenario perfectly portrayed.  less

    • July 15, 2021
    • -
    • 1 likes this
  • 
    Nishat Tamanna Mr. Andy chimed in with the idea of momentum. Momentum is the product of force and the perpendicular distance between the pivot and line of force. He considered providing a force greater than the weight of the tree, but this is only feasible if the force...  moreMr. Andy chimed in with the idea of momentum. Momentum is the product of force and the perpendicular distance between the pivot and line of force. He considered providing a force greater than the weight of the tree, but this is only feasible if the force is delivered on the other side of the root.
    It is a fact that when a force is applied far from the pivot, the force is sufficient to elevate the other force/weight. Mr. Andy used that notion when assisting the individual.  

    • July 15, 2021
    • -
    • 1 likes this
  • 
    Farhan Shahid Andy's idea concerns the effect of moments. The idea about moments is that the further a force acts away from the pivot(the turning point of an object), the more effective it will be in turning the object. For example, the knob of a door is situated the...  moreAndy's idea concerns the effect of moments. The idea about moments is that the further a force acts away from the pivot(the turning point of an object), the more effective it will be in turning the object. For example, the knob of a door is situated the farthest from its pivot, the hinges. In the picture, we can see that the tree is tilted down towards the side of its roots. From this, we can guess that(counting the car as a pivot) there is a greater load acting downwards in that side of the tree, than the side with the leaves. The way the people were doing it before, they were wasting strength overcoming all the those forces and uprooting the tree. They were using the car as a pivot, and the distance between their force and the car/pivot was not much. However, pushing in an anticlockwise direction on the other side, with the leaves, shifts the pivot from being the car to being the roots, all the way on the other side of the tree. The pivot being far away, the forces proved effective.  less

    • July 15, 2021
    • -
    • 1 likes this
  • 
    Abdullah Masud Mr Andy was able to use the principles of moment in the above scenario. As mentioned in the scenario, the roots of the tree were fixed with the ground so it was a fixed point and a fixed point is called a pivot. This pivot allowed the tree to be removed...  moreMr Andy was able to use the principles of moment in the above scenario. As mentioned in the scenario, the roots of the tree were fixed with the ground so it was a fixed point and a fixed point is called a pivot. This pivot allowed the tree to be removed over the car. According to the principles of moment, the distance from the pivot to the point where the force is applied is directly proportional to the moment, meaning the longer this distance, the greater the rotation of the tree and that is why Mr Andy applied his force on the farther end of the tree so that with less force would produce greater moment due to the longer distance, away from the tree and was successful to remove it and save the passenger.  less

    • July 15, 2021
    • -
    • 1 likes this
  • 
    Shaikh Nafisa Binte Fahad Andy told others to help lift the tree from the other side, as the force acting away from the root of the tree made it easier to lift the tree than near the root.
    The car was acting as a pivot here because the weight of the whole tree was on the car. The...  moreAndy told others to help lift the tree from the other side, as the force acting away from the root of the tree made it easier to lift the tree than near the root.
    The car was acting as a pivot here because the weight of the whole tree was on the car. The bottom side of the tree was not uprooted, so it was heavier than the upper part, so more force was needed to lift it from near the roots. Therefore, it was easier to lift the tree upwards at a certain distance away from the root of the tree as there was less weight in the upper direction.
    Today, we learned about a great example in the field of physics. this topic can be identified as the 'moments'. Moments are directly proportional to the force and distance of a body, just like this one! Easy-Peasy!  less

    • July 16, 2021
• 
  Tanveer Tausif Ratul commented on Fatima Ahmed's classified listing.

  

  Asrayan: The Search for a Roof

  Asrayan Project: The Search for a Roof
   
  
  This is Rahim Miah. If you are from Bangladesh, then you must have seen people like him in the streets of Bangladesh.  They either sell snacks at your local school campus, drive rickshaw, work as...

  • July 7, 2021

  • Ashiqur Rahman and MD Robiul Islam Rajon like this.
  • View all 18 comments
  • 
    Iftakhar Utsho Asrayan Project is a great initiative by the Government to decrease extreme poverty. This project gives shelter to homeless people, those people were barely surviving before they got a house from this project. Now they can stay focus on their daily...  moreAsrayan Project is a great initiative by the Government to decrease extreme poverty. This project gives shelter to homeless people, those people were barely surviving before they got a house from this project. Now they can stay focus on their daily livelihood. The project has been going economic vulnerability of many homeless families by providing them with shelters and necessary financial assistance to rebuild their life. As the project now targets the impoverished people of the whole country, by aiding them to build their shelter with a means of income generation can also check the displacement of people from one place to another. Beside that this project provided necessary training to them and revolving interest-free micro-credit to enhance income generating activities to improve their livelihoods and make them self-reliant. With this they can start a small business or cultivate their own food and keeping household pet. This project surely a blessing to those people like Rahim Miah.  less

    • July 7, 2021
  • 
    Kanta Akter Homelessness is a broad social problem in Bangladesh. Homeless women, teenagers, and children feel helpless or unprotected due to multiple forms of victimization, including forced, coerced, or manipulated sexual activity. So, ''The Asrayan project'' is a...  moreHomelessness is a broad social problem in Bangladesh. Homeless women, teenagers, and children feel helpless or unprotected due to multiple forms of victimization, including forced, coerced, or manipulated sexual activity. So, ''The Asrayan project'' is a development project which aims at providing homes for the homeless and gradually making them self-dependent to contribute to the national economy. This project will help lower-income group people to some extent but government support is needed to achieve this to the fullest, such as,
    
    1.Setting priority for ensuring to access good jobs for lower-income group people.
    
    2.Providing Microloans can be beneficial to the landless people who want to start a new business. If the business increases, it will also create more employment opportunities for others.  less

    • July 7, 2021
  • 
    Kanta Akter 3.Removing barriers accelerated the way women getting jobs. Moreover, the women who aren't permitted to work outside can work within the home by running businesses like tailoring, fishing, crafting, stitching, nurturing ducks and chickens, making cakes,...  more3.Removing barriers accelerated the way women getting jobs. Moreover, the women who aren't permitted to work outside can work within the home by running businesses like tailoring, fishing, crafting, stitching, nurturing ducks and chickens, making cakes, and so on.
    4. Lowering the cost of international Migration will be helpful for lower-income people.
    5. Increasing the monthly allowance for elderly people so that they can live a decent life.  

    • July 7, 2021
  • 
    Tanveer Tausif Ratul Asrayan Project has turned into an evident means of
    alleviating poverty of the people who once passed their days in extreme miseries after becoming victims of disasters like cyclone, river erosion and landslides.Firstly,in the joint name of the husband...  moreAsrayan Project has turned into an evident means of
    alleviating poverty of the people who once passed their days in extreme miseries after becoming victims of disasters like cyclone, river erosion and landslides.Firstly,in the joint name of the husband and wife of the resettled
    landless, homeless, miserable and uprooted family, the acknowledgment of ownership of the land is executed and registered.Before,if their monthly income was 10000 tk,60% of that money went into the land-owner’s pocket.By the rest of the amount,it was almost impossible to run a 4-5 member family.But now,they are getting home without any cost & they don’t have to pay any land owners.So,100% of their income will remain in their pocket after a month.Secondly,community centers,mosques,cemeteries,ponds,common lands for raising cattles and agrulture have been provided by the Govt.Moreover,practical and technical training have been given to the rehabilitated family members for productive & income generating...    less

    • July 7, 2021
  • 
    Tanveer Tausif Ratul activities.Besides,micro loans are distributed among them at the end of the training.So they can involve themselves into different activities/start small business with that money.Women are also involved in different activities with
    men.Each house has a...  moreactivities.Besides,micro loans are distributed among them at the end of the training.So they can involve themselves into different activities/start small business with that money.Women are also involved in different activities with
    men.Each house has a latrine with electricity and water.So,the hygiene problems have also been reduced.
    
    
    In conclusion, This project has really opened a door of hope & dream to the poor people.  

    • July 7, 2021
• 
  Tanveer Tausif Ratul commented on Fatima Ahmed's classified listing.

  

  Adam's Brunoise Dice - $5 Physics Quiz

  Adam's Brunoise Dice - $5 physics quiz
   
  
  Adam Petropoulos recently got admitted to the culinary institute named Le Monde in Athens, Greece. His career goal was to become a chef.  He loved food!  He wanted to learn the art of flavor...

  • June 23, 2021

  • Sourav Chowhan likes this.
  • View all 22 comments
  • 
    Khadeeza Afruz Shammee Pascal's principle of pressure describes this knife phenomenon. As a scalar physical quantity ,pressure is defined as the force per unit area applied perpendicular to the surface which it is applied .
    The elementary mathematical expression for pressure...  morePascal's principle of pressure describes this knife phenomenon. As a scalar physical quantity ,pressure is defined as the force per unit area applied perpendicular to the surface which it is applied .
    The elementary mathematical expression for pressure is giving by ,
    P = F/A
    Here, P is the pressure , F is the force acting perpendicular to the surface to which this force is applied and A is the area of the surface .
    The same force applied by a sharp knife with a smaller area of contact will exerts a much greater pressure than a blunt knife having a considerable larger area of contact .
    Once a blunt knife is through the object (vegetable or other food), there is a greater chance for the pressure to lead to slippage, skidding and injury. A sharp knife can cut using the edge of the e knife with a safer slicing. Rather, cuts from sharper knives can actually heal more easily than those from dull knives. A sharp knife is a safer knife than a dull knife.  less

    • June 25, 2021
  • 
    Aria Hossain In physics force=pressure/area. In order to cut food, you have to exert force. According to the equation, force is directly proportional to pressure. A blunt knife has more area around the cutting edge than a sharp knife. So a blunt knife requires more...  moreIn physics force=pressure/area. In order to cut food, you have to exert force. According to the equation, force is directly proportional to pressure. A blunt knife has more area around the cutting edge than a sharp knife. So a blunt knife requires more pressure for the same amount of force to be exerted, as the pressure applied increases the chances of the knife slipping and cutting Adam's hand increases. Similarly, a sharp knife would require less pressure to be applied for the same amount of force to be exerted, this not only allows Adam to cut through the food but also prevents the knife from slipping and cutting his hand.  less

    • June 26, 2021
  • 
    Abdullah Julaybib Firstly, you’ll need more pressure to use a blunt knife.
    P=F/A, for a fixed area, force is directly proportional to pressure. If the
    area of a blunt and a sharp knife is same, then doubling the pressure on blunt
    knife means doubling the force....  moreFirstly, you’ll need more pressure to use a blunt knife.
    P=F/A, for a fixed area, force is directly proportional to pressure. If the
    area of a blunt and a sharp knife is same, then doubling the pressure on blunt
    knife means doubling the force.
    
    Secondly,F= {m(v-u)}/t
    
    Assume, two knives have same mass and you take same amount of time to cut. As
    you start from a zero velocity, that means u=0. Ultimately you end up giving
    much more velocity to the blunt than sharp one. So, if you accidentally slip
    while cutting, blunt will hit your finger faster, which might cause a serious
    injury. Sharp knife will have less velocity, which has multiple advantages:
    bringing the sharp knife to rest is easier than blunt one. If you slip, sharp
    knife won’t hit so fast. It may cause a
    little scratch, or you’ll be lucky to stop the sharp knife as soon as it touches your skin (blunt one
    would cause a deep scar).
    
    
    For same time duration, point of contact (finger and knife)
    faces two different momenta. As a result,...    less

    • June 26, 2021
  • 
    Abhay Sunny Pressure= force/area, area of sharp knife is less than area of blunt knife, p is proportional to 1/area, so pressure of sharp knife is more than blunt knife.Don't get confused with the wight and pressuring, pressure is the force on a unit area that is...  morePressure= force/area, area of sharp knife is less than area of blunt knife, p is proportional to 1/area, so pressure of sharp knife is more than blunt knife.Don't get confused with the wight and pressuring, pressure is the force on a unit area that is help perpendicular whereas weight is the force by which the earth attracts everything towards it's center.  

    • June 27, 2021
  • 
    Abdullah Masud This is simply an example of pressure in our daily lives. Here, according to Pascal's law (P = f/a, where pressure is the force applied over a certain area), the sharp knife can exert greater pressure than the blunt knife, as the sharper knife has less...  moreThis is simply an example of pressure in our daily lives. Here, according to Pascal's law (P = f/a, where pressure is the force applied over a certain area), the sharp knife can exert greater pressure than the blunt knife, as the sharper knife has less contact area for the same force than the blunt knife, so the force would be exerted over a smaller area. So in order to cut anything, one would need to apply a larger force in a blunt knife than a sharper knife, and this might result in the blunt knife cutting the hand due to excessive pressure applied by the user while cutting any other objects.  less

    • June 27, 2021
• 
  Tanveer Tausif Ratul commented on Fatima Ahmed's classified listing.

  

  Jacob's Alaskan Trip

  Jacob's Alaskan Trip
   
  
  Jacob was a physics student at the University of Texas in Austin, Texas, USA.  His hometown was a small city called Soldotna in the Kenai Peninsula in the US state of Alaska. Soldotna's winter was extremely cold w...

  • June 13, 2021

  • View all 16 comments
  • 
    Tanveer Tausif Ratul The 1st phenomena is the result of "friction" which opposes the vehicle's tyre rubber from sliding on slippery roads.The tread on the tires gripped the road surface while jacob was driving and from common sense,it can be realized that jacob's...  moreThe 1st phenomena is the result of "friction" which opposes the vehicle's tyre rubber from sliding on slippery roads.The tread on the tires gripped the road surface while jacob was driving and from common sense,it can be realized that jacob's car had winter tyres which have deeper tread.The treads grip the ice well enough & larger frictional force is produced there as the area of contact becomes larger.Treads have certain patterns that push
    away the ice and snow.So he could drive safely.If no tread, there will be less friction and driving will become unsafe.
    
    Jacob's shoes slipped because uppermost ice layer contains thin water layer on it.Deeper ice layers stick to each other well but upper layers are very loose as they always remain in contact with air.While walking, jacob's shoes rubbed on ice that caused friction.Friction created heat and heat helped to melt the ice which made it more slippery.
    Frictional force is produced where there is a kinetic force acting between the two...    less

    • June 13, 2021
  • 
    Tanveer Tausif Ratul objects.When Jacob was rubbing his hand,a frictional force was produced which was emitted as heat.That energy didn't not come from the atmosphere, but rather the energy he was spending to overcome the frictional forces.

    • June 13, 2021
    • -
    • 1 likes this
  • 
    Abrar Ibne Amin Jim All the situations described above hints at Newton’s 3rd Law & specifically Frictional force.
    
    1) Situation-1, Jacob’s car could travel the road despite the road was slippery. This happened as the tires had enough grooves to increase friction....  moreAll the situations described above hints at Newton’s 3rd Law & specifically Frictional force.
    
    1) Situation-1, Jacob’s car could travel the road despite the road was slippery. This happened as the tires had enough grooves to increase friction. Friction increases due to rough surface, so the tires could make a firm grip on the road and prevent slipping. But if the tires hadn’t enough groove it could felt due to the smooth icy road.
    
    2) 2nd situation where Jacob slipped on the ground due to wearing regular shoes. Although static friction occurred it wasn’t enough to stop slipping as the shoes of Jacob didn’t have enough grip to increase friction.
    
    3) We can see in the 3rd situation that through rubbing his palms together, Jacob felt warm on both palms. This occurred due to sliding friction. The molecules in the palms of Jacob’s started moving quickly. Static electricity was produced due to the sliding friction. Thus this static electricity converted into heat energy. So friction is the root of this.  less

    • June 13, 2021
    • -
    • 1 likes this
  • 
    Abdullah Masud In his wonderful journey, he has met some of the interesting and fundamental laws of physics. First of all, it can be noticed that surface of the ice is slippery. So in order to prevent skidding, the tire of the car had a grooved pattern moulded into the...  moreIn his wonderful journey, he has met some of the interesting and fundamental laws of physics. First of all, it can be noticed that surface of the ice is slippery. So in order to prevent skidding, the tire of the car had a grooved pattern moulded into the rubber surface and are properly inflated which increases the amount of friction force acting on the car and so the car can move smoothly through the ice. Secondly, it is quite good to mention that normal shoes are not built to create a lot of frictional force, so as the ice is slippery, due to less frictional force, Mr Jacob slips.
    In order to prevent slipping on ice, ice boots have quite a good surface that can create a lot of friction with the ice, preventing the user of the boots from sleeping. Thirdly, rubbing hands is also an example of friction. Rubbing hands allows surfaces from both the hands to come into contact and rub against each other and this movement causes friction force to convert the kinetic energy of the hands into the thermal...    less

    • June 13, 2021
    • -
    • 1 likes this
  • 
    Shafaat Shams 1. The snowy road
    is so slippery and doesn’t have enough grips. Jacob’s Car was useful there; it
    gives power to all 4 wheels at the same time. With the help of heavy car
    weight, those 4 tires made 4 friction points. The more friction it made,...  more1. The snowy road
    is so slippery and doesn’t have enough grips. Jacob’s Car was useful there; it
    gives power to all 4 wheels at the same time. With the help of heavy car
    weight, those 4 tires made 4 friction points. The more friction it made, the
    more grip the car got. He might use frictional tires for getting more grips. In
    consequence of that, he moved easily.
    
    
    2.
    On the ice, there are
    unstable water molecules that are weakly bonded to the crystal. When Jacob
    walked on ice, the molecules began to move freely. His shoes had not enough
    friction point to grip in ice. As a result, his foot did not get enough static
    friction force to hold him in place & he slipped.
    
    
    3.
    Jacob’s hands came in contact & move relative to each
    other; the friction between the two hand surfaces converts kinetic energy into
    thermal energy. Thermal energy made his hand wormer and made it safe from being
    frozen.  less

    • June 14, 2021
• 
  Tanveer Tausif Ratul commented on Fatima Ahmed's classified listing.

  

  Jasmine: The Pride of Sundarbans

  Jasmine: The Pride of Sundarbans
   
  
   
  I am an icon of strength, beauty, fearlessness and prowess. People know me as the Royal Bengal Tiger. My name is Jasmine and I am the pride of Sundarbans, my home!  My home, Sundarbans, is the ...

  • May 26, 2021

  • Zeba Afia and Md. Hazrat Ali like this.
  • View all 26 comments
  • 
    Rawnak Jahan Khan As we know Sundarbans is the largest mangrove with rich ecosystems associated divers flora and fauna, its plays an important role to protect the southeastern part of Bangladesh. This part of Bangladesh is more exposer towards climate extremes and...  moreAs we know Sundarbans is the largest mangrove with rich ecosystems associated divers flora and fauna, its plays an important role to protect the southeastern part of Bangladesh. This part of Bangladesh is more exposer towards climate extremes and Sundarbans is the prime means of protecting the litoral community and managing Sundarbans as a healthy forest is essential thereby. Therefore when we talked about saving Sundarbans, instead of managing Sundarbans we sould be more focused on managing Sundarbans depended community. Where the best way can be alternate income generation(AIG). It could be carried out easily promoting eco-tourism in a large scale. A large number of employment can take place among Sndarbans associate community by promoting home staying, local guide, boatman etc. services. In that case, skill development to creat the circumstance tourist friendly is essential. Besides, the women should be trained to sell their native goods. This sort of intervention can be the most effective...    less

    • May 30, 2021
  • 
    Rawnak Jahan Khan As we know Sundarbans is the largest mangrove with rich ecosystems associated divers flora and fauna, its plays an important role to protect the southeastern part of Bangladesh. This part of Bangladesh is more exposer towards climate extremes and...  moreAs we know Sundarbans is the largest mangrove with rich ecosystems associated divers flora and fauna, its plays an important role to protect the southeastern part of Bangladesh. This part of Bangladesh is more exposer towards climate extremes and Sundarbans is the prime means of protecting the litoral community and managing Sundarbans as a healthy forest is essential thereby. Therefore when we talked about saving Sundarbans, instead of managing Sundarbans we sould be more focused on managing Sundarbans depended community. Where the best way can be alternate income generation(AIG). It could be carried out easily promoting eco-tourism in a large scale. A large number of employment can take place among Sndarbans associate community by promoting home staying, local guide, boatman etc. services. In that case, skill development to creat the circumstance tourist friendly is essential. Besides, the women should be trained to sell their native goods. This sort of intervention can be the most effective...    less

    • May 30, 2021
  • 
    Farjana Zaman Appointing community leaders as forest guards or watchman will keep the community people away from exploiting resources. Second step should be creating alternative employment facilities for other community families.

    • May 30, 2021
  • 
    Md. Hazrat Ali The Sundarbans is a cluster of the low land island in the Bay of Bengal. It was the world’s largest mangrove with an area of 10000 Km2 where 60% in Bangladesh and the rest
    in India. The local people alongside Sundarbans are completely dependent on this...  moreThe Sundarbans is a cluster of the low land island in the Bay of Bengal. It was the world’s largest mangrove with an area of 10000 Km2 where 60% in Bangladesh and the rest
    in India. The local people alongside Sundarbans are completely dependent on this forest for their livelihood. They cut trees, catching fish, collecting honey, harvesting Golpata, etc. Above some of the work they are doing illegally. The main challenge is to improve their lives without degrading the Sundarbans if we will plan sustainably. Although economic gains are important, ecological and environmental issues must be considered in long-term development plans. The Sundarbans mangroves region is a UN Educational, Scientific, and Cultural Organization World Heritage Site, a Ramsar site, and a Class 3 tiger conservation landscape of global priority. If the local people will work jointly with the tourism board, some people will get a job like; tourist guide, driver guard, etc. They can accommodate tourists as well as provide some...    less

    • May 30, 2021
  • 
    Hymanti Sarkar Firstly, if we notice the occupations of local people, we can see most frequently practiced professions are Mouwal, Baowal, fisherman, collecting golpata, fish fry, crab etc, poaching. So, they are highly dependent on forest. And the main reasons of this...  moreFirstly, if we notice the occupations of local people, we can see most frequently practiced professions are Mouwal, Baowal, fisherman, collecting golpata, fish fry, crab etc, poaching. So, they are highly dependent on forest. And the main reasons of this dependency are the mono-cropping characteristics of their agriculture, low literacy rate, lack of awareness, lack of facilities etc.
    So, Govt. And other agencies Should focus on their education, sanitation and other facilities. As most of them are farmer and do fish farming can practice different agroforestry systems but for this, more researches should be done to ensure which crops, trees grow well in these areas because salinity is a big problem here. And obviously sustainable dams need to be built so that tidal water does not reach the locality.
    If they get their needs which they get from Sundarbans, our forest will be safe. And those projects harm Sundarbans, they should be stopped. Besides Eco-tourism can be a safe way for economic...    less

    • May 30, 2021
• 
  Tanveer Tausif Ratul commented on Fatima Ahmed's classified listing.

  

  Mr. Ethan's Dilemma

  Mr. Ethan's Dilemma
   
  
  Mr. Ethan was a senior political leader in a village near the Dhaka District. He also used to be a professor of Dhaka University before his political career. He was highly respected in his village community as he did an...

  • May 11, 2021

  • View all 7 comments
  • 
    Yeasin Arafath As an educated person Mr.Ethan can take some steps to stop spreading covid & to develop
    their village economy. He can use his political purpose in this situation also.
    
    In my point of view some ideas are pointed...  moreAs an educated person Mr.Ethan can take some steps to stop spreading covid & to develop
    their village economy. He can use his political purpose in this situation also.
    
    In my point of view some ideas are pointed below:
    
    1.During lockdown he may arrange online learning & earning programs with younger
    & educated village people.It may help their economic condition.
    
    2.He can make a team or organization with young people those who give free service during pandemic such as
    village women can work in home(hand crafts,sewing etc.) and they can help to delivering these things.
    
    3.From political background he may manage some reliefs from govt. and distribute those with his organization’s young people.
    
    4.He can make schedules for village farmers when they go to their land to cultivate & collect their vagetables and others seeds by maintaining social distance.
    
    5.He and with the help of young people they can arrange market with maintaining social
    distance in the open ground area so that village people can buy...    less

    • May 11, 2021
  • 
    Taarik Hasan As a Mr. Ethan and a professor and a political leader, I
    will use my knowledge from both fields....  moreAs a Mr. Ethan and a professor and a political leader, I
    will use my knowledge from both fields.
    
    
    I will separate the jobs or general people's economic contributions
    into three categories: highest, the less, and the least. The main objective is
    to keep the economy after reducing the interaction of people.
    
    
    I will set the time frame for various categories. Before the
    office hours on the very morning, the markets will be available for estern
    housing (in the evening, the western people will come).
    
    
    With the office hours, the banks and other related services
    will be there. In the evening time, the least contributors will come across
    like shopping complexes and restaurants.
    
    
    At night the manufacturers and agriculture, food services, garments,
    suppliers will work.
    
    
    
    
    
    The statistics on the economic contribution I will follow to
    set them at morning, day, or night shifts, related with one another.
    
    
    
    
    
    People must not leave houses for roaming will be ensured by
    political campaigns and creating...    less

    • May 12, 2021
  • 
    Towhidur R. To combat against covid-19 nothing beats social distancing, closing the borders, and nationwide lockdown. But to reduce the economic backlash certain steps can be taken.
    Distribution of workforce could ensure less gathering and reduction of service....  moreTo combat against covid-19 nothing beats social distancing, closing the borders, and nationwide lockdown. But to reduce the economic backlash certain steps can be taken.
    Distribution of workforce could ensure less gathering and reduction of service. Businesses will divide the workers into shifts and follow strict guidelines. They will also have to reduce the services they provide and stay open for extra hours. Garments, constructions need to divide their workforce into shifts so it doesn't hinder their work.
    Long journeys should be restricted as it increased the chances of spreading the virus. Borders need to stay closed at all costs because new strains are being discovered on a regular basis around the globe and the effects of the mutated virus could be devastating.
    Law force should be deployed to monitor unnecessary gatherings and ensure people maintaining the guidelines in public.
    The government needs to organize relief funds to ensure infected individuals don't have to go hungry or forced to go...    less

    • May 12, 2021
  • 
    Khadeeza Afruz Shammee Although the duration and severity of Covid-19 are terrible, it is quite impossible for a country like Bangladesh, to have a long lockdown to sustain the economy. As a policymaker, I will take the following steps :
    - I will instruct the industries to...  moreAlthough the duration and severity of Covid-19 are terrible, it is quite impossible for a country like Bangladesh, to have a long lockdown to sustain the economy. As a policymaker, I will take the following steps :
    - I will instruct the industries to work by dividing the working time into double shifts. In this way, even if the cost of running the industry is a bit higher, the density in the workplace can be avoided.
    -Since the marketplaces must be kept open, a family member from each family will be provided a movement pass for shopping at most one day of the week to avoid extra crowds.
    -Adequate number of transports would be kept running on the occasion of the upcoming festival so that the passengers can maintain minimum social distance.
    -Strict surveillance will be put in place to ensure that people are maintaining proper social distance and hygiene and not leaving their house unnecessarily. Public awareness activities should be carried out to motivate the people to abide by the necessary health norms.  less

    • May 13, 2021
  • 
    Fatima Ahmed Thank you for all your answers everybody. We will announce the winner of this quiz tomorrow.

    • May 14, 2021
    • -
    • 1 likes this
• 
  Fatima Ahmed: Tanveer, we just finished reading your entry for the Corona Hospital Tracking project. It is extremely detailed and neat. Definitely one of the best entries from our pool. And the website is fantastic. We did not expect a live website like that built in...  moreTanveer, we just finished reading your entry for the Corona Hospital Tracking project. It is extremely detailed and neat. Definitely one of the best entries from our pool. And the website is fantastic. We did not expect a live website like that built in real time for this project. So you went above and beyond on this project. Here is your content for this project for all of us to learn:  

  https://drive.google.com/file/d/1w6GOCEdGZlmscuak14AQ3C0uLo6tduJ

  https://drive.google.com/file/d/1w6GOCEdGZlmscuak14AQ3C0uLo6tduJ7/view?usp=sharing

  • April 30, 2021

  • Tanveer Tausif Ratul likes this.
  • 
    Tanveer Tausif Ratul Thank You so much Ma'am...

    • April 30, 2021
• 
  Fatima Ahmed: Tanveer's Photography business in Sylhet for the quiz answer. Check it out.

  

  • April 14, 2021
• 
  Tanveer Tausif Ratul commented on Fatima Ahmed's photo.

  

  Hi Tanveer, thank you for educating us on your Sonar system of the deep blue sea. Your idea is simply amazing and it is very nicely designed in terms of its technical aspects. You gave an exceptional hand written drawing with all the labels. It just...  moreHi Tanveer, thank you for educating us on your Sonar system of the deep blue sea. Your idea is simply amazing and it is very nicely designed in terms of its technical aspects. You gave an exceptional hand written drawing with all the labels. It just helped us to accurately depict how your solution will work. Thank you so much for thinking creatively and building a solution. Keep up the good work! Here is the link to your entire science contest entry for all our other members to see: https://drive.google.com/file/d/1HNyh4S4Tk6BMVXsywk_eoYCiFuaLURO0/view?usp=sharing  less

  • March 24, 2021

  • Tanveer Tausif Ratul likes this.
  • 
    Tanveer Tausif Ratul Thanks ma'am..

    • March 24, 2021
• 
  Tanveer Tausif Ratul liked Fatima Ahmed's photo.

  

  Hi Tanveer, thank you for educating us on your Sonar system of the deep blue sea. Your idea is simply amazing and it is very nicely designed in terms of its technical aspects. You gave an exceptional hand written drawing with all the labels. It just...  moreHi Tanveer, thank you for educating us on your Sonar system of the deep blue sea. Your idea is simply amazing and it is very nicely designed in terms of its technical aspects. You gave an exceptional hand written drawing with all the labels. It just helped us to accurately depict how your solution will work. Thank you so much for thinking creatively and building a solution. Keep up the good work! Here is the link to your entire science contest entry for all our other members to see: https://drive.google.com/file/d/1HNyh4S4Tk6BMVXsywk_eoYCiFuaLURO0/view?usp=sharing  less

  • March 24, 2021

  • Tanveer Tausif Ratul likes this.
  • 
    Tanveer Tausif Ratul Thanks ma'am..

    • March 24, 2021
• 
  Fatima Ahmed: Hi Tanveer, thank you for educating us on your Sonar system of the deep blue sea. Your idea is simply amazing and it is very nicely designed in terms of its technical aspects. You gave an exceptional hand written drawing with all the labels. It just...  moreHi Tanveer, thank you for educating us on your Sonar system of the deep blue sea. Your idea is simply amazing and it is very nicely designed in terms of its technical aspects. You gave an exceptional hand written drawing with all the labels. It just helped us to accurately depict how your solution will work. Thank you so much for thinking creatively and building a solution. Keep up the good work! Here is the link to your entire science contest entry for all our other members to see: https://drive.google.com/file/d/1HNyh4S4Tk6BMVXsywk_eoYCiFuaLURO0/view?usp=sharing  less

  

  • March 24, 2021

  • Tanveer Tausif Ratul likes this.
  • 
    Tanveer Tausif Ratul Thanks ma'am..

    • March 24, 2021
• 
  Fatima Ahmed: Hi Tanveer, thank you for writing the article about the Educational System in your home district. It was so interesting to read more and more of it till the end as you wrote your own personal journey with nostalgic memories. Your personal pictures...  moreHi Tanveer, thank you for writing the article about the Educational System in your home district. It was so interesting to read more and more of it till the end as you wrote your own personal journey with nostalgic memories. Your personal pictures vividly described those childhood experiences! We liked reading all the expectations you had about education and the actual problems you faced. Lots of personal eye witness type experiences that resonates with all of us so well! The 'Bully Box' is an amazing idea and schools should implement this system. Also, taking care of physically disabled children in schools is quite unheard of in most schools and hope your suggestions help. Good to know about Khulna lifestyle!  less

  

  The 2nd Home - Coolinventor Wiki

  The 2nd Home - Coolinventor Wiki

  • February 16, 2021

  • Tanveer Tausif Ratul and Samia Ahmed like this.
  • 
    Tanveer Tausif Ratul Thank Apu

    • February 16, 2021
• 
  Tanveer Tausif Ratul liked Fatima Ahmed's photo.

  

  Tanveer's B-9 robot for the Technology Contest. Very intricate details in the hand written drawing! Brilliant. Here is his description and drawing: https://drive.google.com/file/d/1q986Xl8TfPMeeYiBwG6IKygBTlPbc5EE/view?usp=sharing

  • February 8, 2021

  • Tanveer Tausif Ratul likes this.
• 
  Fatima Ahmed: Tanveer's B-9 robot for the Technology Contest. Very intricate details in the hand written drawing! Brilliant. Here is his description and drawing: https://drive.google.com/file/d/1q986Xl8TfPMeeYiBwG6IKygBTlPbc5EE/view?usp=sharing

  

  • February 8, 2021

  • Tanveer Tausif Ratul likes this.
• 
  Tanveer Tausif Ratul commented on Fatima Ahmed's blog entry.

  

  Rahim's Education

  Rahim's Education
   
  
  Please click here to read this story and find out the topic for our next wiki. 
  If you are interested to write about this wiki, please go to the comment section below and let us know why do you want to write about this t...

  • January 29, 2021

  • Sakib Maksud, Jannatin Naim, and nishi kabbo like this.
  • View all 32 comments
  • 
    Nayeema Bushra The very fact that some realized the flaw, might be an indicator of overcoming an important stage of it.

    • January 30, 2021
  • 
    Sajidul Islam I've also faced the same problem as Rahim. I preferred that a school should be such that the mental and physical development of the students is good. So that they can develop themselves as real human beings.

    • January 30, 2021
  • 
    Shahriar Dipto Educational institutions are the second most important ognanization. With flaws in this system, I am still seeing the impact on later lives. I want to dive into the tactics how we could have start fresh.

    • January 30, 2021
  • 
    Abhay Sunny During this lockdown, i have noticed Online education is not bad at all. we were wasting a lot of time while going to schools. That's why i am interested to write on this project to tell my uncovered idea

    • January 30, 2021
  • 
    Afroza Sultana This story is a mirror of most school education systems. If I have the opportunity, I can share my views with you.

    • January 31, 2021
• 
  Monowar Ony is now friends with Tanveer Tausif Ratul.

  • January 15, 2021
• 
  Fatima Ahmed: Hi Tanveer, we liked your ideas in the latest wiki on bringing world change. Simple things were described in so many wonderful ways with perfect examples from personal experiences and pictures. The article had great sense of humor that we kept reading...  moreHi Tanveer, we liked your ideas in the latest wiki on bringing world change. Simple things were described in so many wonderful ways with perfect examples from personal experiences and pictures. The article had great sense of humor that we kept reading till the end! Small grammatical improvement might be needed here and there, but the content was fantastic! Here is your article where you have explained how to first change yourself, then your society and then finally the world. Amazing narrative.  

  

  Change Yourself, Change Your Surrounding, Change The World - Coo

  Change Yourself, Change Your Surrounding, Change The World - Coolinventor Wiki

  • December 27, 2020

  • Tanveer Tausif Ratul, Nishat Tamanna, and Bj Zishan like this.
  • 
    Tanveer Tausif Ratul Thanks Ma'm.. next time i will try to avoid those mistakes

    • December 27, 2020
• 
  Tanveer Tausif Ratul has added a new cover photo.

  

  • December 20, 2020
• 
  Tanveer Tausif Ratul liked Fatima Ahmed's blog entry.

  

  I Will Change the World By....

  I Will Change the World by....
   
  
  Please complete the sentence 'I Will Change the World by...' and elaborate your answer in the Coolinventor Wiki page. Please write your wiki like a story in narrative...  moreI Will Change the World by....
   
  
  Please complete the sentence 'I Will Change the World by...' and elaborate your answer in the Coolinventor Wiki page. Please write your wiki like a story in narrative format. 
   
  If you are interested t...  

  • December 19, 2020

  • 15 people like this
  • View all 42 comments
  • 
    pulak islam Interested

    • December 19, 2020
  • 
    Noorjahan Binte Farhana Interested

    • December 19, 2020
  • 
    Shahbaj Nihan Interested

    • December 19, 2020
  • 
    Noshin saiyara interested

    • December 19, 2020
  • 
    Noshin saiyara interested

    • December 19, 2020
• 
  Tanveer Tausif Ratul commented on Fatima Ahmed's blog entry.

  

  I Will Change the World By....

  I Will Change the World by....
   
  
  Please complete the sentence 'I Will Change the World by...' and elaborate your answer in the Coolinventor Wiki page. Please write your wiki like a story in narrative...  moreI Will Change the World by....
   
  
  Please complete the sentence 'I Will Change the World by...' and elaborate your answer in the Coolinventor Wiki page. Please write your wiki like a story in narrative format. 
   
  If you are interested t...  

  • December 19, 2020

  • 15 people like this
  • View all 42 comments
  • 
    pulak islam Interested

    • December 19, 2020
  • 
    Noorjahan Binte Farhana Interested

    • December 19, 2020
  • 
    Shahbaj Nihan Interested

    • December 19, 2020
  • 
    Noshin saiyara interested

    • December 19, 2020
  • 
    Noshin saiyara interested

    • December 19, 2020
• 
  Fatima Ahmed: Tanveer's Beauty wiki - one of the best articles! Excellent writing and great ideas and we all loved the sense of humor in the writing. Very relevant personal stories and real life examples written in a very fun and interesting way to keep the readers...  moreTanveer's Beauty wiki - one of the best articles! Excellent writing and great ideas and we all loved the sense of humor in the writing. Very relevant personal stories and real life examples written in a very fun and interesting way to keep the readers engaged. We all liked the fact how Facebook. Instagram and society defines beauty and how wrong things are taught in society since childhood! Really awesome! Thanks for writing such an interesting article! Sharing with all here:  

  

  Beauty, A Light In The Heart - Coolinventor Wiki

  Beauty, A Light In The Heart - Coolinventor Wiki

  • December 2, 2020

  • Bj Zishan, Tanveer Tausif Ratul, and Mansura Akter Susama like this.
  • 
    Tanveer Tausif Ratul Thanks Ma'm...

    • December 2, 2020
• 
  Tanveer Tausif Ratul commented on Fatima Ahmed's photo.

  

  Thank you everyone for sharing your traffic jam quiz answers. Everyone's solutions were great and we all learned a lot of things. We can choose only one winner though...so we selected Tanveer Tausif as the winner of this quiz contest. We selected the...  moreThank you everyone for sharing your traffic jam quiz answers. Everyone's solutions were great and we all learned a lot of things. We can choose only one winner though...so we selected Tanveer Tausif as the winner of this quiz contest. We selected the winner's answer because it was mostly innovative, but practical too even though it may take a long time to implement it. Please check your inbox by which you signed up in our site for more details about this quiz. Click on this file where we have jotted down everyone's answers: https://drive.google.com/file/d/1BYB-_Gv3-RZFJs-7ngBq2GCy8R62bsfn/view?usp=sharing  less

  • November 29, 2020

  • 8 people like this
  • 
    Bj Zishan Cngratulations

    • November 28, 2020
  • 
    Tanveer Tausif Ratul Thanks

    • November 29, 2020
  • 
    sharmin akter Please help me.... I can't perticipate any quiz or project. Actually, i haven't any idea.. What to do?

    • November 29, 2020
  • 
    Fatima Ahmed Sharmin, please inbox me with what issues you are having with the projects and quizzes. We can take it from there.

    • November 29, 2020
• 
  Tanveer Tausif Ratul liked Fatima Ahmed's photo.

  

  Thank you everyone for sharing your traffic jam quiz answers. Everyone's solutions were great and we all learned a lot of things. We can choose only one winner though...so we selected Tanveer Tausif as the winner of this quiz contest. We selected the...  moreThank you everyone for sharing your traffic jam quiz answers. Everyone's solutions were great and we all learned a lot of things. We can choose only one winner though...so we selected Tanveer Tausif as the winner of this quiz contest. We selected the winner's answer because it was mostly innovative, but practical too even though it may take a long time to implement it. Please check your inbox by which you signed up in our site for more details about this quiz. Click on this file where we have jotted down everyone's answers: https://drive.google.com/file/d/1BYB-_Gv3-RZFJs-7ngBq2GCy8R62bsfn/view?usp=sharing  less

  • November 29, 2020

  • 8 people like this
  • 
    Bj Zishan Cngratulations

    • November 28, 2020
  • 
    Tanveer Tausif Ratul Thanks

    • November 29, 2020
  • 
    sharmin akter Please help me.... I can't perticipate any quiz or project. Actually, i haven't any idea.. What to do?

    • November 29, 2020
  • 
    Fatima Ahmed Sharmin, please inbox me with what issues you are having with the projects and quizzes. We can take it from there.

    • November 29, 2020
• 
  Mehran Sakib Choudhury is now friends with Tanveer Tausif Ratul.

  • November 23, 2020
• 
  Tanveer Tausif Ratul liked Fatima Ahmed's classified listing.

  

  Traffic Jam

  Traffic Jam
  
  Bangladeshi traffic jam is legendary!  Any Bangladeshi living in Dhaka knows how painful it is to sit in this traffic jam for hours and hours everyday.  Obeying the traffic signal is a laughing matter in Dhaka and the Metro R...

  • November 18, 2020

  • 12 people like this
  • View all 21 comments
  • 
    Marzina Akhter Rikta Dhaka is the
    capital of Bangladesh. Every person wants to lead a healthy and happy life. For
    this reason, they come to the capital city to get the consumption of...  moreDhaka is the
    capital of Bangladesh. Every person wants to lead a healthy and happy life. For
    this reason, they come to the capital city to get the consumption of every
    opportunity.
    
    
    Nowadays,
    Dhaka is increasing full of population. As a result, any pollution will
    increase day by day. And traffic congestion is one of them.
    
    
    Right now,
    Every Bangladeshi knows about the traffic jam in Dhaka. It is a common fact in our daily life.
    Specifically, who lives in Dhaka.
    
    
    Our
    the government takes many actions to solve the traffic problem in Dhaka. But we all
    know that this all is not working correctly. I think I have a unique and
    innovative idea to solve the traffic problem of Dhaka.
    
    
    1.
    
    All of the Minibussess, Laguna should be removed. In place of this transport, the government can set up Double-decker busses all over Dhaka.
    
    
    2.
    The government should control the private car which belongs to a person personally.
    In terms of a single private car, the government can be charged with only...    less

    • November 19, 2020
  • 
    Nishat Tamanna Rerouting can be a partial solve to Traffic Jam. Where there are several roads for going one place to another, everybody uses the shortest path or the widest roads; that causes traffic jam.Dividing up the vehicles properly into roads can help everybody...  moreRerouting can be a partial solve to Traffic Jam. Where there are several roads for going one place to another, everybody uses the shortest path or the widest roads; that causes traffic jam.Dividing up the vehicles properly into roads can help everybody to get rid of the problem. For this, existing google map can be updated more (as it can already show which road is jam packed and how much time we need to go through that path) or new apps can be developed for this purpose.All drivers will be connected to the app or that updated google map for getting more details every minute to choose a path to avoid the chance of creating a jam.  less

    • November 19, 2020
  • 
    Sharmin Sultana Traffic will continue to plague cities as more drivers hit the roads each year, and city engineers will need to look to cutting-edge technology to help the public have a healthier and happier life. We should continue to keep our eyes open and help city...  moreTraffic will continue to plague cities as more drivers hit the roads each year, and city engineers will need to look to cutting-edge technology to help the public have a healthier and happier life. We should continue to keep our eyes open and help city planners and policymakers find the right balance.  

    • November 19, 2020
  • 
    Shahriar Dipto We are coming to an end of increasing road number and decreasing transport number because of scarcity of enough land & increasing number of people. I may sound like crazy, but it's high time to look for air services for our daily life at a low cost. If...  moreWe are coming to an end of increasing road number and decreasing transport number because of scarcity of enough land & increasing number of people. I may sound like crazy, but it's high time to look for air services for our daily life at a low cost. If we can use air ways for this purpose, the problem will be solved easily.  

    • November 19, 2020
  • 
    Noorjahan Binte Farhana I have some idea for solving the traffic jam, 1. we can build flyover service as much as high we can, we can use abandoned road like hatirjheel. 2. we can open Office, school, college, malls for 24 hours, half people will do their duty in the day and...  moreI have some idea for solving the traffic jam, 1. we can build flyover service as much as high we can, we can use abandoned road like hatirjheel. 2. we can open Office, school, college, malls for 24 hours, half people will do their duty in the day and half people will do their
    duty in the night. 3. we can create divided road, all transport can't use the same one road. 4. Rickshaw should be removed.  

    • November 21, 2020
• 
  Tanveer Tausif Ratul commented on Fatima Ahmed's classified listing.

  

  Traffic Jam

  Traffic Jam
  
  Bangladeshi traffic jam is legendary!  Any Bangladeshi living in Dhaka knows how painful it is to sit in this traffic jam for hours and hours everyday.  Obeying the traffic signal is a laughing matter in Dhaka and the Metro R...

  • November 18, 2020

  • 12 people like this
  • View all 21 comments
  • 
    Marzina Akhter Rikta Dhaka is the
    capital of Bangladesh. Every person wants to lead a healthy and happy life. For
    this reason, they come to the capital city to get the consumption of...  moreDhaka is the
    capital of Bangladesh. Every person wants to lead a healthy and happy life. For
    this reason, they come to the capital city to get the consumption of every
    opportunity.
    
    
    Nowadays,
    Dhaka is increasing full of population. As a result, any pollution will
    increase day by day. And traffic congestion is one of them.
    
    
    Right now,
    Every Bangladeshi knows about the traffic jam in Dhaka. It is a common fact in our daily life.
    Specifically, who lives in Dhaka.
    
    
    Our
    the government takes many actions to solve the traffic problem in Dhaka. But we all
    know that this all is not working correctly. I think I have a unique and
    innovative idea to solve the traffic problem of Dhaka.
    
    
    1.
    
    All of the Minibussess, Laguna should be removed. In place of this transport, the government can set up Double-decker busses all over Dhaka.
    
    
    2.
    The government should control the private car which belongs to a person personally.
    In terms of a single private car, the government can be charged with only...    less

    • November 19, 2020
  • 
    Nishat Tamanna Rerouting can be a partial solve to Traffic Jam. Where there are several roads for going one place to another, everybody uses the shortest path or the widest roads; that causes traffic jam.Dividing up the vehicles properly into roads can help everybody...  moreRerouting can be a partial solve to Traffic Jam. Where there are several roads for going one place to another, everybody uses the shortest path or the widest roads; that causes traffic jam.Dividing up the vehicles properly into roads can help everybody to get rid of the problem. For this, existing google map can be updated more (as it can already show which road is jam packed and how much time we need to go through that path) or new apps can be developed for this purpose.All drivers will be connected to the app or that updated google map for getting more details every minute to choose a path to avoid the chance of creating a jam.  less

    • November 19, 2020
  • 
    Sharmin Sultana Traffic will continue to plague cities as more drivers hit the roads each year, and city engineers will need to look to cutting-edge technology to help the public have a healthier and happier life. We should continue to keep our eyes open and help city...  moreTraffic will continue to plague cities as more drivers hit the roads each year, and city engineers will need to look to cutting-edge technology to help the public have a healthier and happier life. We should continue to keep our eyes open and help city planners and policymakers find the right balance.  

    • November 19, 2020
  • 
    Shahriar Dipto We are coming to an end of increasing road number and decreasing transport number because of scarcity of enough land & increasing number of people. I may sound like crazy, but it's high time to look for air services for our daily life at a low cost. If...  moreWe are coming to an end of increasing road number and decreasing transport number because of scarcity of enough land & increasing number of people. I may sound like crazy, but it's high time to look for air services for our daily life at a low cost. If we can use air ways for this purpose, the problem will be solved easily.  

    • November 19, 2020
  • 
    Noorjahan Binte Farhana I have some idea for solving the traffic jam, 1. we can build flyover service as much as high we can, we can use abandoned road like hatirjheel. 2. we can open Office, school, college, malls for 24 hours, half people will do their duty in the day and...  moreI have some idea for solving the traffic jam, 1. we can build flyover service as much as high we can, we can use abandoned road like hatirjheel. 2. we can open Office, school, college, malls for 24 hours, half people will do their duty in the day and half people will do their
    duty in the night. 3. we can create divided road, all transport can't use the same one road. 4. Rickshaw should be removed.  

    • November 21, 2020
• 
  Tanveer Tausif Ratul has added a new profile photo.

  

  • November 11, 2020
• 
  Tanveer Tausif Ratul

  

  • October 31, 2020
• 
  Tanveer Tausif Ratul has added a new cover photo.

  

  • October 31, 2020
• 
  Fatima Ahmed: Hi Tanvir, you have done a great job with your first writing in our platform - the 'Look Within' article. It is very nicely written in narrative format with lots of good sense of humor! It was a great read. Next time, try to add some good pictures too....  moreHi Tanvir, you have done a great job with your first writing in our platform - the 'Look Within' article. It is very nicely written in narrative format with lots of good sense of humor! It was a great read. Next time, try to add some good pictures too. Here is your content:  

  Do I Really Matter? - Coolinventor Wiki

  Do I Really Matter? - Coolinventor Wiki

  • October 29, 2020

  • 
    Tanveer Tausif Ratul thanx apu..a lot

    • October 29, 2020
• 
  Tanveer Tausif Ratul follow Samia Zaman.

  • October 26, 2020
• 
  Tanveer Tausif Ratul follow Naomi Debnath .

  • October 26, 2020
• 
  Syeda Nowshin Anjum Hoque is now friends with Tanveer Tausif Ratul.

  • October 26, 2020
• 
  Tanveer Tausif Ratul follow Sagor Khan.

  • October 25, 2020
• 
  Tanveer Tausif Ratul has added a new profile photo.

  

  • October 25, 2020
• 
  Tanveer Tausif Ratul liked Fatima Ahmed's blog entry.

  

  Look Within

  LOOK WITHIN
   
  
  I MATTER...  moreLOOK WITHIN
   
  
  I MATTER BECAUSE...…..
   
  Please complete the above sentence and elaborate this in our Coolinventor Wiki page. In other words, please write a wiki in our www.coolinventor.com/wiki page which mentions the following:...  

  • October 23, 2020

  • 8 people like this
  • View all 14 comments
  • 
    mokarom hossain I'm sorry to hear tell that I forgot my wiki password so I can't put it down so I put it in the doc file.

    • October 26, 2020
  • 
    Fatima Ahmed Mokarom, can you please reset your password, so we can have everyone's wiki in the same place?

    • October 26, 2020
  • 
    Zobayer Ahmed Fatima Ahmed Please check the inbox of coolinventor

    • October 27, 2020
    • -
    • 1 likes this
  • 
    Fatima Ahmed Hi Zobayer, yes I checked it. You want to be paid in Upwork,, right?

    • October 27, 2020
  • 
    Zobayer Ahmed Right. Fatima Ahmed

    • November 4, 2020
• 
  Noshin Tasnia is now friends with Tanveer Tausif Ratul.

  • October 21, 2020
• 
  Tanveer Tausif Ratul is now friends with Fatima Ahmed.

  • October 21, 2020
• 
  Tanveer Tausif Ratul follow Noshin Tasnia.

  • October 21, 2020
• 
  Tanveer Tausif Ratul liked Fatima Ahmed's photo.

  

  Hello everybody, please make sure you read this page on best tips to write in our site. In the next project, we will heavily penalize if contributors copy anything directly from the internet. In the last project, we found many writings like that but...  moreHello everybody, please make sure you read this page on best tips to write in our site. In the next project, we will heavily penalize if contributors copy anything directly from the internet. In the last project, we found many writings like that but we were a bit lenient. But this time, you may not make any money at all if there is any sign of plagiarism in the writing. Admins can quickly recognize writings which have been copied from the internet. So it is upto the admin from now on to deduct points if they feel anything might have been copied from the net. And yes, we can figure out from the reading which ones are from the internet and which ones are someone's own words. So please read this page very carefully, especially the plagiarism part! Here is the link for tips: https://coolinventor.com/wiki/index.php?title=Tips_to_submit_good_quality_wiki_articles  less

  • October 21, 2020

  • 9 people like this
• 
  Tanveer Tausif Ratul joined the group Coolinventor Contributors

  • October 21, 2020
• 
  Tanveer Tausif Ratul follow Fatima Ahmed.

  • October 21, 2020
• 
  Tanveer Tausif Ratul has just signed up. Say hello!

  • October 21, 2020

  • Tanveer Tausif Ratul likes this.