This Exploratorium exhibit traces the history of chocolate, takes you on a tour of a chocolate factory, and explores how it make us feel when we eat it. This online exhibit includes RealVideo and RealAudio clips. There are instructions for tempering your own chocolate, but I found this activity too complicated to be done easily at home. Includes materials lists, instructions and a few patterns. These lessons are written for teachers but you can use them too.
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At the Manor you'll find Valentine's activity pages, crafts, party decorations and recipes, clipart and icons, and Mac freeware games.