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Science Notebook: Compare Two Paper Bridges
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Today I am practising: comparing two designs while changing one feature
1
Draw a flat strip and a folded strip. Predict which will hold more counters before bending.
2
Place each strip across the same gap between two stacks of books.
3
Test the flat strip. Add one counter at a time near the center. Record how many it held before bending.
4
Repeat with the folded strip and the same counters. Record the result.
5
Which strip held more, or did they tie? Use your two counts as evidence.
6
If you tried another fold, what would you keep the same?
- Set up a low gap on a table and use identical strips of paper.
- Choose safe, identical counters and keep them away from younger children.
- Accept a tie. If results vary, repeat both tests without changing the setup.