Showing posts with label low cost. Show all posts
Showing posts with label low cost. Show all posts
Monday, September 14, 2015
Friday, September 11, 2015
Hand crank electric generator
This little electric generator may be used in a variety of contexts, from a cause and effect activity (turning a light on), a science lesson (how electricity is produced), or recharging a cell phone / tablet. Students can literally feel the work needed to power modern electronics, lights, fans, etc.
Cost: the hand crank generator was approximately $20, materials (scrap wood, adjustable bracket, screws): approximately $5
Cost: the hand crank generator was approximately $20, materials (scrap wood, adjustable bracket, screws): approximately $5
submitted by Pete Carpenter OTR/L
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