Fifth graders examine plants and animals in two ecosystems and compare them. In this ecosystem survival instructional activity, 5th graders compare and contrast a coral reef and kelp forest ecosystem. Students investigate the...

Students review background information about water tension and adhesive forces on sand. For this sand science lesson, students visit a beach and have a sand building competition near water and away from it. Students discuss water tension...

Acting as a subtopic of the General Chemistry Virtual Textbook's section on Atoms and the Periodic Table, this site discusses the relation between matter and energy with attention given to Mass-energy, energy, and relativity.