How Many Regular Polyhedrons Are There In This or Any Universe?

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

Brilliant graphics depict a variety of allotropes, especially the allotropes of carbon. Some notes are available to help make these useful for teaching your young chemists, but not for every slide. With some additional preparation on...

Students complete a variety of activities surrounding minerals, crystals, and mineralogy. They locate common minerals on a world map, complete a lab in which they identify the chemical and physical properties of various minerals, etc.