The instructor demonstrates by writing on a purple wall while outside. The concept taught is finding the slope of a line as well as the midpoint using the formulas for slope and midpoint of a line.

This instructor teaches outside with huge pieces of chalk to demonstrate how to find the distance of a line on the coordinate plane by using the Pythagorean Theorem.

The instructor has returned to the parking garage with his chalk. In this video he gives clear instructions on how he wants the viewer to answer his questions. This series is a good resource for students to educate themselves.

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People work hard on educational categories, and we want to encourage them to make more!