Building the pyramids Whiteboard exercise Play

Energy flow and food chains Student activity Play

Energy flow through food chains Animation Play

Energy loss Slideshow Play

Food chains Class activity Play

Food chains Whiteboard presentation Play

How a pyramid of numbers works Animation Play

How food chains work Student activity Play

Inverted pyramids Illustration Play

Pesticides in the food chain Slideshow Play

Plants and animals in food chains Illustration Play

Producers and consumers Student activity Play

Producers and consumers - statements Whiteboard exercise Play

Producers and consumers in a typical food chain Illustration Play

Pyramids of numbers Student activity Play

Sample food chains Illustration Play

Toxic materials in food chains Whiteboard exercise Play

Toxic materials in food chains Student activity Play

Typical food chain Animation Play