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