Students at a North Carolina school developed a low-cost, rudimentary interactive whiteboard using a Wii controller, a marker and $6 in supplies from an electronics store. A teacher at the school, which does not have interactive whiteboards, showed students a YouTube video explaining how to make the devices on their own. "It can do everything that a Promethium board can do, for the most part -- 85% of the functionality for 5% of the price," said teacher Josh Thornton.

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