Wednesday, February 29, 2012

Sink or Float?

We finally were able to put our 100 Day buoyant structures in the pool (Grade 2 structures only).

We let them float for 100 seconds, then took them out. Some of the glue dissolved right after we took them out. Hot glue was fine -- but regular white glue caused some disappointment. Luckily it all happened after they floated!

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