Popping Film Canisters II

Peggy Ravitch
Troop 744 Brownies
Chapel Hill, North Carolina

You put in coin shaped magnets in a film canister, stacking magnets one on top of the other.

The last one you put in should be polarized (is that the right word)? Anyway, it should repel the previous magnet. Close the lid and then open it and watch the magnet flip when it has the space to repel.

Another neat science trick/lesson. Maybe wave your magic wand and entertain the troop.

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