Students investigate the correct mix of material types for compost. In this composting lesson, students explore the correct amounts of different types of materials to create a compost heap. Students then create a compost heap.

Students use standard rulers to measure the length of common classroom items - such as pencils, books, desk tops - in inches and centimeters, and measure weight in pounds. They also answer math questions, such as "How long is the front...

Students investigate soil porosity by building a model using the three main soil textures: sand, silt, and clay.

[Free Registration/Login may be required to access all resource tools.] Describes the characteristics and types of soil.