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