100th Day Crown
A card crown decorated with 100 gems, stickers or drawn dots — great as a classroom craft.
20 min Cost $ 4 items
100 Cup Tower Challenge
Teams race to build a tower using exactly 100 plastic cups — a classroom favourite.
How to make it
- Give each team 100 plastic cups.
- Set a timer for ten minutes.
- The tallest standing tower wins; discuss which shapes were most stable.
What you need
- 100 plastic cups per team
- Timer
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