Learn about the physics of resistance in a wire. Change its resistivity, length, and area to see how they affect the wire's resistance. The sizes of the symbols in the equation change along with the diagram of a...
This is instructions for how to make a simple sun tracker for solar cells. These are the only parts required: a motor, gears, a small solar cell, a large solar cell, aluminium foil, tape or glue and cardboard. A great...
Jose Pino's Project and Tidbits presents these how to instructions about making hi-fidelity speakers using a styrofoam-plate. This is a good activity to teach students about electricity, magnets, and sound. The...
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