PBS
Pbs Learning Media: The Lowdown: Brief History of the First Earth Day and What We Can Learn From Its Success Lesson Plan
Earth Day grew out of the environmental movement in the late 1960s in response to a series of environmental disasters that took lives, marred natural beauty and threatened animal species. An estimated 20 million Americans participated in...
Science Education Resource Center at Carleton College
Serc: Investigating Rotation: Why Is There Day and Night?
In this rotation activity, students investigate what causes day and night by participating in a classroom activity. Students will observe, question, and investigate how the relationship between the earth and sun causes day and night.