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