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