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.
NameDateTime takenScore ___ / 40
- 1.🏗️ Where does a hollow bird bone get its strength from? (a) triangles (b) arches and domes (c) tubes
- 2.🌉 Does a torn flat sheet make a strong or a weak bridge? (a) weak bridge (b) strong bridge
- 3.🌉 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
- 4.🔍 Which is the odd one out? (a) a wet flat sheet (b) a zigzag-folded sheet (c) a flat tissue (d) a torn flat sheet
- 5.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) a ruler (b) two books (c) a battery cell (d) sheets of paper
- 6.True or false: a U-shaped channel makes a strong bridge. (a) False (b) True
- 7.🔮 Predict: you make more, closer zigzag folds. The bridge holds ___ coins. (a) the same number of (b) fewer (c) zero (d) more
- 8.🔍 Which is the odd one out? (a) paper with folded edges (b) a zigzag-folded sheet (c) a U-shaped channel (d) a flat tissue
- 9.⚖️ Fair test — which paper shape holds the most coins? True or false: the gap between books is what we measure. (a) False (b) True
- 10.🧺 Which of these is needed for the paper bridge? (a) coins (b) a balloon (c) yeast (d) a magnet
- 11.True or false: rolled paper tubes makes a weak bridge. (a) True (b) False
- 12.🌉 Does a wet flat sheet make a strong or a weak bridge? (a) strong bridge (b) weak bridge
- 13.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) sheets of paper (b) a ruler (c) a mirror (d) coins
- 14.True or false: a bridge truss gets its strength from triangles. (a) False (b) True
- 15.🌉 Which of these makes a strong bridge? (a) a flat tissue (b) a torn flat sheet (c) a zigzag-folded sheet (d) one flat sheet
- 16.True or false: a wet flat sheet makes a weak bridge. (a) True (b) False
- 17.🧺 Which of these is not needed for the paper bridge? (a) yeast (b) a ruler (c) two books (d) coins
- 18.True or false: a magnet is not needed for the paper bridge. (a) True (b) False
- 19.🔍 Which is the odd one out? (a) a torn flat sheet (b) a zigzag-folded sheet (c) paper with folded edges (d) rolled paper tubes
- 20.🔍 Which is the odd one out? (a) one flat sheet (b) rolled paper tubes (c) a zigzag-folded sheet (d) a U-shaped channel
- 21.🏗️ Which of these gets its strength from triangles? (a) a bamboo pole (b) an old stone bridge (c) an electric tower (d) a round pillar
- 22.🏗️ Where does a bridge truss get its strength from? (a) tubes (b) triangles (c) arches and domes
- 23.🧺 Do we need a ruler for the paper bridge? (a) not needed (b) needed
- 24.True or false: an electric tower gets its strength from a tube shape. (a) False (b) True
- 25.🏗️ Where does a temple dome get its strength from? (a) triangles (b) arches and domes (c) tubes
- 26.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) two books (b) turmeric powder (c) a ruler (d) sheets of paper
- 27.True or false: a roof frame gets its strength from arches or domes. (a) False (b) True
- 28.True or false: a flat tissue makes a weak bridge. (a) False (b) True
- 29.🔍 What happens to a flat paper bridge with just a few coins on it? (a) it turns to card (b) it sags and falls (c) it floats up (d) it gets stronger
- 30.True or false: two books is not needed for the paper bridge. (a) True (b) False
- 31.⚖️ Fair test — which paper shape holds the most coins? True or false: the kind of paper is kept the same. (a) True (b) False
- 32.🧺 Do we need a battery cell for the paper bridge? (a) not needed (b) needed
- 33.🌉 Which of these makes a strong bridge? (a) one flat sheet (b) a torn flat sheet (c) a U-shaped channel (d) a wet flat sheet
- 34.🌉 Which of these makes a weak bridge? (a) a U-shaped channel (b) rolled paper tubes (c) one flat sheet (d) a zigzag-folded sheet
- 35.🔮 Predict: you put the coins in the middle instead of near the ends. The bridge bends ___. (a) less (b) upward (c) not at all (d) more
- 36.🌉 Which of these makes a weak bridge? (a) rolled paper tubes (b) a flat tissue (c) a zigzag-folded sheet (d) a U-shaped channel
- 37.🏗️ Where does a bamboo pole get its strength from? (a) tubes (b) arches and domes (c) triangles
- 38.True or false: a ruler is needed for the paper bridge. (a) False (b) True
- 39.🏗️ Which of these gets its strength from a tube shape? (a) an electric tower (b) a hollow bird bone (c) an old stone bridge (d) an eggshell
- 40.True or false: an eggshell gets its strength from arches or domes. (a) True (b) False
Answer key
- tubes
- weak bridge
- folds make it stiffer
- a zigzag-folded sheet
- a battery cell
- True
- more
- a flat tissue
- False
- coins
- False
- weak bridge
- a mirror
- True
- a zigzag-folded sheet
- True
- yeast
- True
- a torn flat sheet
- one flat sheet
- an electric tower
- triangles
- needed
- False
- arches and domes
- turmeric powder
- False
- True
- it sags and falls
- False
- True
- not needed
- a U-shaped channel
- one flat sheet
- more
- a flat tissue
- tubes
- True
- a hollow bird bone
- True
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