Look, then try.
Add one identical block at a time at the centre. Count only blocks held before noticeable bending or slipping; record zero if the first block causes that. Use the same stopping rule for both designs. Record slipping separately from bending. If you run out of blocks, write “held all available blocks”; you have not found the limit.
Work with a grown-up on a low surface. Use large lightweight blocks and stable, low supports. Keep fingers clear if the bridge slips. Never stand on the model bridge.
Use a finger, stylus or mouse in each drawing box. Type below it, or ask a grown-up to write your words. Your work stays in this tab. Save before refreshing or leaving.
Flat paper
Draw your flat bridge after testing.
Folded paper
Draw your folded bridge after testing.
Compare
Draw or describe the difference you noticed.
Your ideas belong here. There is no score.
What are we learning?
A result includes both a count and an observation. Fair comparisons use the same method and stopping rule.
Prefer a worksheet?
Open the individual cartoon activity sheet to print or save. Use portrait orientation and fit to page.
Open worksheet to save ↓Try another bridge activity.
Build a Paper BridgeCompare flat and folded paper across the same small gap.
Draw · Type · Save
Plan My Paper BridgeSketch a bridge and decide how you will compare it fairly.
Draw · Type · Save
My Bridge PredictionPredict what will happen before putting blocks on your bridge.
Draw · Type · Save
Improve My Paper BridgeChange one feature and see what happens in another test.
Draw · Type · Save