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