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