Curated OER
Endangered Species in the Sonoran Desert
Students identify and explain some caused of endangerment and extinction for species as well as explain the effects of extinction on an ecosystem. Teachers use this lesson plan before teaching students about collecting insects or plants.
Curated OER
Worm Watching
Students examine the role earthworms play in building soils. They discuss worms and what they do with soil, make predictions and draw pictures, and observe their worms in soil over a two week period.