Curated OER
Traditional American Indian Lodges
Young scholars explore the mathematical properties of traditional American Indian lodges. They examine the effect of increasing sides of a polygon, calculate the surface area of prisms and cylinders, and construct a classroom size...
Curated OER
Harnessing the Wind for Electricity
Ninth graders explain how wind can produce electricity. In this geometry instructional activity, 9th graders construct their own pin wheel turbine and calculate its power. They discuss the pros and cons of using wind generator.