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