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Design It! Sand and Water Clocks Guide

Price: $9.95
Stock #: 651669

  • Buy 10 or above and pay only $8.95 each
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    After getting acquainted with some basic electrical circuits using batteries and bulbs, children are challenged to design a flashlight from a soda can, cardboard, battery, and wires. They also design a rotary switch, which they use to control a model traffic light system. Instructional material only.

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