Santa Monica College
The Properties of Oxygen Gas
Scholars generate and collect pure oxygen through a decomposition reaction of hydrogen peroxide in the fourth lesson of an 11-part series. Then, they complete six investigations into the properties of oxygen.
Curated OER
Earthquakes: Third Grade Lesson Plans and Activities
Introduce third graders to energy waves with a hands-on geology activity, in which they answer questions and compare seismograms in the San Francisco Bay area. After a demonstration that shows how bigger waves indicate a high-intensity...