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#339. Teeth

, level: all
Posted by Sheryl (YonderMpm@aol.com).
Boutwell, Wilmington,MA
Materials Required: 3 hard boiled white shell eggs, Coke, cups, flouride toothpaste

Get 3 white shelled hard boiled eggs. Coat one egg's shell with flouride toothpaste. Put one egg in a cup of water (control- explain need for control group), one in Coke, and the one with toothpaste coating in another cup of Coke. Leave for a day or two. The Coke egg will turn brown but the toothpaste coated one will be protected.

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