A two-page sorting activity where students match organisms from the Arctic, Desert, and Coral Reef to their correct ecosystems and identify producers.

A visual slide deck exploring energy flow in extreme ecosystems (Arctic, Desert, Reef) and introducing the concept of wildlife crossings.

A creative two-page design activity where students draft a wildlife bridge to solve habitat fragmentation and analyze its impact on energy flow.

An aquatic food web worksheet where students identify producers/consumers and draw energy flow arrows for a pond ecosystem.

A two-page cut-and-paste activity where students build a terrestrial food web for a forest ecosystem and draw energy flow arrows.

A visual slide deck introducing food webs, the difference between food chains and webs, and contrasting terrestrial and aquatic energy foundations.

A one-page reading passage about energy flow and trophic levels, followed by four multiple-choice comprehension questions.

A comprehensive single-page teacher-facing resource providing the answer key for all student activities, including the new wildlife bridge design project and the habitat hike.

A comprehensive matching and identification worksheet focusing on trophic level vocabulary, including a fixed 4-level diagram lab for color-coding.