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