Curated OER
Moh's Hardness Test
Young geologists utilize Moh's hardness scale to help them correctly sort and classify different types of rocks. This lesson has everything you need, including an excellent example of the Mohs' Hardness Test, to successfully implement...
Forest Foundation
Waste Not - Want Not
Recycling is the focus in the sixth of a nine-lesson series devoted to forest ecosystems. Class members read an article about the responsible use of natural resources and ways to reduce land fill.