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The National Academy of the Sciences has launched this new website that gives an overview of the U.S. energy system. It covers 4 main topics: energy uses, sources of energy, the cost of energy (in terms of the environment, national security, and sustainability), and energy efficiency. The site has easy to navigate content and links to source material, and it includes n energy quiz, a glossary, and a source library. The site's producers are also developing curriculum-based materials for high school and middle school classrooms. Two special features--Our Energy System and Understasnding Efficiency--are designed to actively engage visitors and enhance their understanding of energy, including what it is, h ow we use it, and ways to conserve it.

Looks like a good resource related to the topic of energy

This is an online course called the Habitable Planet. Users can select content by unit which lists all of the topics coveredn in the course or content by type which lists what is available to users. The content by type includes the online textbook in pdf format, videos, interactive labs, visuals, scientists, professional development guide and a glossary. It looks very organized.

This is a math dictionary for kids. It makes learning math terms visual for students.