Paper Bridge STEM Challenge Worksheet
What you do (Shape makes strength): 1. Place two books 15 cm apart, low and steady. 2. Lay a flat sheet across and add coins one by one in the middle until it falls. 3. Fold the same kind of sheet into a zigzag and test it the same way. 4. Record the coins each shape holds, then wash your hands.
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- 1.🌉 Which of these makes a strong bridge? (a) a flat tissue (b) a torn flat sheet (c) a wet flat sheet (d) paper with folded edges
- 2.🛟 How should the two books be placed for the paper bridge? (a) high and wobbly (b) on a stool edge (c) on top of a pet (d) low and steady
- 3.True or false: rolled paper tubes makes a strong bridge. (a) True (b) False
- 4.⚖️ Fair test — which paper shape holds the most coins? Which of these is the one thing we change? (a) the shape of the paper (b) the kind of paper (c) where coins are placed (d) the gap between books
- 5.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) two books (b) coins (c) a ruler (d) a balloon
- 6.⚖️ Fair test — which paper shape holds the most coins? Which of these is kept the same? (a) the shape of the paper (b) the kind of paper (c) coins it holds
- 7.🏗️ Where does a roof frame get its strength from? (a) triangles (b) tubes (c) arches and domes
- 8.🏗️ Where does a bridge truss get its strength from? (a) tubes (b) triangles (c) arches and domes
- 9.🌉 Does rolled paper tubes make a strong or a weak bridge? (a) strong bridge (b) weak bridge
- 10.⚖️ Fair test — which paper shape holds the most coins? True or false: where coins are placed is kept the same. (a) True (b) False
- 11.🌉 Why does a zigzag-folded sheet hold more coins than a flat one? (a) folds add glue (b) folds are magnetic (c) folds make it wet (d) folds make it stiffer
- 12.🧺 Which of these is needed for the paper bridge? (a) a magnet (b) yeast (c) turmeric powder (d) coins
- 13.🌉 Which of these makes a weak bridge? (a) rolled paper tubes (b) a U-shaped channel (c) one flat sheet (d) a zigzag-folded sheet
- 14.🔍 Which is the odd one out? (a) paper with folded edges (b) a zigzag-folded sheet (c) a flat tissue (d) rolled paper tubes
- 15.🔮 Predict: you make more, closer zigzag folds. The bridge holds ___ coins. (a) fewer (b) the same number of (c) more (d) zero
- 16.🌉 Which of these makes a strong bridge? (a) one flat sheet (b) a U-shaped channel (c) a torn flat sheet (d) a flat tissue
- 17.🥚 Why is an egg hard to crush when you press on its two ends? (a) its curved arch shape (b) it is magnetic (c) it is made of steel (d) it is very hot
- 18.🔺 Which shape do engineers use in bridges and towers because it keeps its shape under a push? (a) the triangle (b) the star (c) the square (d) the heart shape
- 19.⚖️ Fair test — which paper shape holds the most coins? True or false: the shape of the paper is the one thing we change. (a) False (b) True
- 20.🌉 Does a flat tissue make a strong or a weak bridge? (a) strong bridge (b) weak bridge
- 21.True or false: a wet flat sheet makes a weak bridge. (a) True (b) False
- 22.⚖️ Fair test — which paper shape holds the most coins? Which of these is kept the same? (a) where coins are placed (b) coins it holds (c) the shape of the paper
- 23.🧺 Which of these is needed for the paper bridge? (a) a battery cell (b) a ruler (c) yeast (d) turmeric powder
- 24.True or false: sheets of paper is not needed for the paper bridge. (a) True (b) False
- 25.🏗️ Where does a temple dome get its strength from? (a) triangles (b) arches and domes (c) tubes
- 26.🌉 Which of these makes a weak bridge? (a) a zigzag-folded sheet (b) a wet flat sheet (c) a U-shaped channel (d) rolled paper tubes
- 27.🧺 Do we need a mirror for the paper bridge? (a) not needed (b) needed
- 28.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) two books (b) coins (c) a ruler (d) a magnet
- 29.🌉 Which of these makes a strong bridge? (a) rolled paper tubes (b) a wet flat sheet (c) a flat tissue (d) a torn flat sheet
- 30.True or false: a zigzag-folded sheet makes a strong bridge. (a) True (b) False
- 31.🧺 Do we need a magnet for the paper bridge? (a) needed (b) not needed
- 32.🌉 Does a wet flat sheet make a strong or a weak bridge? (a) weak bridge (b) strong bridge
- 33.🧺 Do we need sheets of paper for the paper bridge? (a) needed (b) not needed
- 34.⚖️ Fair test — which paper shape holds the most coins? True or false: coins it holds is kept the same. (a) False (b) True
- 35.🌉 Does a U-shaped channel make a strong or a weak bridge? (a) strong bridge (b) weak bridge
- 36.True or false: paper with folded edges makes a weak bridge. (a) False (b) True
- 37.True or false: a hollow bird bone gets its strength from triangles. (a) False (b) True
- 38.True or false: an electric tower gets its strength from triangles. (a) False (b) True
- 39.True or false: a flat tissue makes a weak bridge. (a) False (b) True
- 40.⚖️ Fair test — which paper shape holds the most coins? True or false: the kind of paper is the one thing we change. (a) True (b) False
Answer key
- paper with folded edges
- low and steady
- True
- the shape of the paper
- a balloon
- the kind of paper
- triangles
- triangles
- strong bridge
- True
- folds make it stiffer
- coins
- one flat sheet
- a flat tissue
- more
- a U-shaped channel
- its curved arch shape
- the triangle
- True
- weak bridge
- True
- where coins are placed
- a ruler
- False
- arches and domes
- a wet flat sheet
- not needed
- a magnet
- rolled paper tubes
- True
- not needed
- weak bridge
- needed
- False
- strong bridge
- False
- False
- True
- True
- False
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