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.🌉 Which of these makes a weak bridge? (a) paper with folded edges (b) a zigzag-folded sheet (c) rolled paper tubes (d) one flat sheet
- 2.True or false: coins is not needed for the paper bridge. (a) True (b) False
- 3.🧺 Do we need a balloon for the paper bridge? (a) not needed (b) needed
- 4.🧺 Which of these is not needed for the paper bridge? (a) a ruler (b) sheets of paper (c) coins (d) a magnet
- 5.🌉 Does a zigzag-folded sheet make a strong or a weak bridge? (a) weak bridge (b) strong bridge
- 6.🧺 Do we need sheets of paper for the paper bridge? (a) not needed (b) needed
- 7.True or false: rolled paper tubes makes a strong bridge. (a) False (b) True
- 8.🧺 Do we need a ruler for the paper bridge? (a) needed (b) not needed
- 9.🧺 Which of these is needed for the paper bridge? (a) a battery cell (b) a magnet (c) a ruler (d) yeast
- 10.🛟 How should the two books be placed for the paper bridge? (a) high and wobbly (b) on top of a pet (c) low and steady (d) on a stool edge
- 11.🏗️ Where does a bridge truss get its strength from? (a) tubes (b) arches and domes (c) triangles
- 12.🌉 Which of these makes a strong bridge? (a) one flat sheet (b) a wet flat sheet (c) a torn flat sheet (d) paper with folded edges
- 13.⚖️ Fair test — which paper shape holds the most coins? True or false: the kind of paper is what we measure. (a) True (b) False
- 14.🏗️ Where does a round pillar get its strength from? (a) triangles (b) arches and domes (c) tubes
- 15.🛟 Coins have been touched by many hands. After the experiment you should ___. (a) skip washing (b) rub your eyes (c) wash your hands (d) lick your fingers
- 16.🔮 Predict: you put the coins in the middle instead of near the ends. The bridge bends ___. (a) upward (b) less (c) not at all (d) more
- 17.🏗️ Where does an electric tower get its strength from? (a) tubes (b) triangles (c) arches and domes
- 18.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) sheets of paper (b) a ruler (c) turmeric powder (d) two books
- 19.True or false: paper with folded edges makes a strong bridge. (a) True (b) False
- 20.⚖️ Fair test — which paper shape holds the most coins? What do we do with “the shape of the paper”? (a) we change it (b) we keep it the same (c) we measure it
- 21.🏗️ Where does an eggshell get its strength from? (a) triangles (b) tubes (c) arches and domes
- 22.🏗️ Where does a hollow bird bone get its strength from? (a) triangles (b) tubes (c) arches and domes
- 23.🔺 Which shape do engineers use in bridges and towers because it keeps its shape under a push? (a) the heart shape (b) the star (c) the triangle (d) the square
- 24.🏗️ Where does a temple dome get its strength from? (a) arches and domes (b) triangles (c) tubes
- 25.True or false: a zigzag-folded sheet makes a weak bridge. (a) False (b) True
- 26.True or false: a flat tissue makes a strong bridge. (a) True (b) False
- 27.⚖️ Fair test — which paper shape holds the most coins? What do we do with “the kind of coins”? (a) we keep it the same (b) we measure it (c) we change it
- 28.True or false: a zigzag-folded sheet makes a strong bridge. (a) True (b) False
- 29.⚖️ Fair test — which paper shape holds the most coins? What do we do with “coins it holds”? (a) we change it (b) we keep it the same (c) we measure it
- 30.🔮 Predict: you make more, closer zigzag folds. The bridge holds ___ coins. (a) fewer (b) the same number of (c) zero (d) more
- 31.True or false: sheets of paper is needed for the paper bridge. (a) False (b) True
- 32.True or false: a torn flat sheet makes a weak bridge. (a) False (b) True
- 33.🏗️ Which of these gets its strength from a tube shape? (a) a temple dome (b) an eggshell (c) a roof frame (d) a hollow bird bone
- 34.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) two books (b) a battery cell (c) sheets of paper (d) a ruler
- 35.⚖️ Fair test — which paper shape holds the most coins? True or false: the gap between books is kept the same. (a) False (b) True
- 36.🌉 Does rolled paper tubes make a strong or a weak bridge? (a) strong bridge (b) weak bridge
- 37.True or false: coins is needed for the paper bridge. (a) False (b) True
- 38.🔮 Predict: the gap between the books gets wider. The bridge holds ___. (a) more coins (b) the same coins (c) fewer coins (d) only water
- 39.🏗️ Which of these gets its strength from arches or domes? (a) a bridge truss (b) an electric tower (c) a round pillar (d) an old stone bridge
- 40.🔍 Which is the odd one out? (a) a zigzag-folded sheet (b) one flat sheet (c) a U-shaped channel (d) paper with folded edges
Answer key
- one flat sheet
- False
- not needed
- a magnet
- strong bridge
- needed
- True
- needed
- a ruler
- low and steady
- triangles
- paper with folded edges
- False
- tubes
- wash your hands
- more
- triangles
- turmeric powder
- True
- we change it
- arches and domes
- tubes
- the triangle
- arches and domes
- False
- False
- we keep it the same
- True
- we measure it
- more
- True
- True
- a hollow bird bone
- a battery cell
- True
- strong bridge
- True
- fewer coins
- an old stone bridge
- one flat sheet
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