Curated OER
Food Chains and Food Webs
Fourth graders investigate food chains. In this living environment lesson, 4th graders begin to understand the interdependence of organisms. Students describe the connections organisms have to the ecosystem. Students research online,...
Curated OER
Ecosystems
A critical look into the structure and function of ecosystems is here for young learners as a series of lessons and worksheet activities. Topics covered include land-based and marine ecosystems, connections to the water cycle, food webs,...