How does one organism get its energy? What is the main source of energy in an ecosystem? How does the flow of energy affect different types of ecosystems? Answer these questions with a fill-in-the-blank worksheet. 

You are what you eat—or at least a part of what you eat. Budding scientists examine owl pellets to develop their own food webs. They use tooth and skull identification techniques to classify what they find.

Mammals have unique interactions with their ecosystems. Using a multi-part lesson, learners research local mammals using recommended websites and use their findings to create their own paper ecosystems including appropriate mammals. They...

Students investigate the environment by participating in a class trip. In this pond ecosystem activity, students define a list of vocabulary terms associated with ponds such as invertebrate and metamorphosis. Students attend a field trip...

Third graders research ecosystems, the work of ecologists, John Muir's contribution to the environment and an endangered species of their choice. They read books, participate in discussions, and write reports.