What an impressive task it is to make dental impressions! Pupils learn how dentists use proportional reasoning, unit conversions, and systems of equations to estimate the materials needed to make stone models of dental impressions....

Study customary measurements with your sixth graders. They will investigate linear and capacity measurements to then measure and convert linear and capacity units. Finally they will work in small groups to conduct experiments. Resources...

Ninth graders explain how wind can produce electricity. In this geometry lesson, 9th graders construct their own pin wheel turbine and calculate its power. They discuss the pros and cons of using wind generator.