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CK-12 Foundation
Ck 12: Fifth Grade Science: Earth Science: Protecting the Water Supply
Explore the ways to reduce water pollution and strategies for conserving water with this module. The modules reviews over ways water is polluted and how individuals can conserve water.
CK-12 Foundation
Ck 12: Fifth Grade Science: Life Science: The Flow of Energy in an Ecosystem
A module that explains what an ecosystem is and how energy and matter move through them. Students will look at the different roles of plants and animals and at ecological relationships in food chains and food webs.
Bill Nye
Bill Nye: Planaria Fishing
In this tutorial, Bill Nye explains how to catch planeria, small carnivorous worms that live in ponds. In addition, he explains their role in the environment.
Other
Webucate: Free Multimedia Resources for Education
A labor of love created by a school in Great Britain. This is a well-organized image gallery with photos and other resources presented by topic, e.g., animals, places in the US, science, sports, etc. Though nothing to compare with a...