Curated OER
Population Densities
Students explore biological impact by completing a worksheet in class. In this animal population lesson, students utilize river rocks and jars to conduct a coqui frog population role play activity. Students define a list of amphibian...
Curated OER
Urban Ecosystems 5: In Defense Of Cities
Students explain that while cities have unattractive features, the density of human life enables energy efficiency, mass transit, recycling, and other benefits which are difficult or impossible in rural areas. This is the fifth in an...
Curated OER
Cactus Wheel
Students explore plant biology by conducting field experiments outside of class. In this desert plant lesson, students discuss how cacti thrive in such dry climates and how dense their populations are. Students utilize action cards, a...