Open-ended | Adult-guided

Cup Tower

Need2 matching lightweight paper cups and 1 optional spare
TimeOpen-ended
MessNot measured
1

Adult puts one cup upside down.

2

Set another bottom-to-bottom on it.

3

Take the top cup off gently.

4

Rebuild or try one change.

Parent check: Stay beside the child. Choose intact lightweight cups for everyone who can reach them. Stop after mouthing, throwing, damage, climbing or unwanted collapse. Research-backed, not family-tested; open the guide for fit, rescue and cleanup.
Best for: trying a small build and noticing what changes.
More ways to use this idea: Full Paper Cup Tower guide · Engineering activities for 4 year olds · Math activities for 4 year olds at home