Science in Elementary Education

Science in Elementary Education

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A three-way switch works because it can be on in either the up or down position, depending on the position of the other switch. A three-way switch requires an extra wire between the two switches as compared to a two-way switch. In otheranbsp;...

Title:Science in Elementary Education
Author:Joseph M. Peters, David L. Stout
Publisher:Prentice Hall - 2006


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