Students learn about the feeding relationships in an estuary ecosystem with this interactive energy pyramid activity. A second activity involves research and a video clip to elaborate the learning.

Explains what biomass and energy pyramids are and provides a table highlighting their differences.

Explains the roles of consumers, producers, and detrivores or decomposers and how energy flows through the different levels of the energy pyramid of a tropical rainforest.

Given illustrations, students will analyze the flow of matter and energy in food chains, food webs, and ecological pyramids.

Complete illustrated discussion of energy flow within ecosystems, including discussions of trophic levels, ecological pyramids, food chains and webs, biological magnification, and cycles.

In this unit students explore major marine ecosystems by locating them on maps. Students use marine examples to learn about energy transfer through food chains and food webs and then they discuss how food webs can illustrate the health...

For this lesson, students learn about marine food webs and pyramids, and how energy flows through a marine ecosystem. They then research a marine organism and its role in a marine food web. The class pools their information to create a...

Investigate the mechanical advantage of the lever in this interactive activity from the NOVA Web site.

Describes how a food chain works in a desert and how the Mojave desert food chain works in particular.