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? What do we do with “the gap between books”? (a) we measure it (b) we change it (c) we keep it the same
- 2.🧺 Which of these is not needed for the paper bridge? (a) coins (b) sheets of paper (c) a magnet (d) two books
- 3.🧺 Which of these is needed for the paper bridge? (a) coins (b) turmeric powder (c) a mirror (d) yeast
- 4.True or false: an electric tower gets its strength from triangles. (a) False (b) True
- 5.True or false: an old stone bridge gets its strength from triangles. (a) False (b) True
- 6.⚖️ Fair test — which paper shape holds the most coins? What do we do with “the kind of coins”? (a) we measure it (b) we change it (c) we keep it the same
- 7.True or false: rolled paper tubes makes a weak bridge. (a) False (b) True
- 8.🌉 Does one flat sheet make a strong or a weak bridge? (a) strong bridge (b) weak bridge
- 9.🏗️ Which of these gets its strength from arches or domes? (a) a bridge truss (b) a round pillar (c) an eggshell (d) a hollow bird bone
- 10.🛟 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
- 11.⚖️ Fair test — which paper shape holds the most coins? True or false: the kind of paper is what we measure. (a) True (b) False
- 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.🥚 Why is an egg hard to crush when you press on its two ends? (a) it is made of steel (b) it is magnetic (c) it is very hot (d) its curved arch shape
- 14.True or false: a torn flat sheet makes a strong bridge. (a) False (b) True
- 15.🔍 Which is the odd one out? (a) one flat sheet (b) a torn flat sheet (c) a U-shaped channel (d) a wet flat sheet
- 16.True or false: yeast is not needed for the paper bridge. (a) False (b) True
- 17.🧺 Which of these is not needed for the paper bridge? (a) coins (b) a mirror (c) sheets of paper (d) two books
- 18.🧺 Which of these is not needed for the paper bridge? (a) a ruler (b) coins (c) a balloon (d) sheets of paper
- 19.⚖️ 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
- 20.🏗️ Where does a hollow bird bone get its strength from? (a) triangles (b) tubes (c) arches and domes
- 21.🏗️ Where does an old stone bridge get its strength from? (a) arches and domes (b) tubes (c) triangles
- 22.True or false: coins is needed for the paper bridge. (a) False (b) True
- 23.True or false: a round pillar gets its strength from a tube shape. (a) False (b) True
- 24.True or false: one flat sheet makes a weak bridge. (a) False (b) True
- 25.🏗️ Where does an eggshell get its strength from? (a) triangles (b) tubes (c) arches and domes
- 26.⚖️ Fair test — which paper shape holds the most coins? True or false: the kind of coins is the one thing we change. (a) True (b) False
- 27.True or false: a flat tissue makes a weak bridge. (a) True (b) False
- 28.🌉 Which of these makes a weak bridge? (a) one flat sheet (b) a zigzag-folded sheet (c) rolled paper tubes (d) a U-shaped channel
- 29.True or false: an eggshell gets its strength from arches or domes. (a) True (b) False
- 30.True or false: a mirror is needed for the paper bridge. (a) False (b) True
- 31.⚖️ 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
- 32.🏗️ Where does a bamboo pole get its strength from? (a) arches and domes (b) tubes (c) triangles
- 33.🔮 Predict: the gap between the books gets wider. The bridge holds ___. (a) fewer coins (b) the same coins (c) more coins (d) only water
- 34.🔮 Predict: you make more, closer zigzag folds. The bridge holds ___ coins. (a) the same number of (b) fewer (c) zero (d) more
- 35.🌉 Does a flat tissue make a strong or a weak bridge? (a) weak bridge (b) strong bridge
- 36.🧺 Do we need turmeric powder for the paper bridge? (a) not needed (b) needed
- 37.🌉 Which of these makes a weak bridge? (a) paper with folded edges (b) a zigzag-folded sheet (c) a U-shaped channel (d) a flat tissue
- 38.🔺 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 square (d) the triangle
- 39.⚖️ Fair test — which paper shape holds the most coins? Which of these is what we measure? (a) the kind of coins (b) coins it holds (c) the kind of paper (d) the shape of the paper
- 40.True or false: a ruler is not needed for the paper bridge. (a) False (b) True
Answer key
- we keep it the same
- a magnet
- coins
- True
- False
- we keep it the same
- False
- weak bridge
- an eggshell
- wash your hands
- False
- we keep it the same
- its curved arch shape
- False
- a U-shaped channel
- True
- a mirror
- a balloon
- the kind of coins
- tubes
- arches and domes
- True
- True
- True
- arches and domes
- False
- True
- one flat sheet
- True
- False
- True
- tubes
- fewer coins
- more
- weak bridge
- not needed
- a flat tissue
- the triangle
- coins it holds
- False
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