Astronomy & Space

Astronomical Society of the Pacific: Education
NASA Spacelink: An Aeronautics and Space Resource for Education
Jet Propulsion Laboratory: The Space Place
NASA Space Science: Information for Educators
The Sunspot Cycle

Biology/Botany

American Botanical Council: Herbalgram.org
Herbal-Medicine.org
Herb Reference
The Wilderness Society
World Wildlife Fund

General Science & Technology Activities

Columbia Education Center: Science Lesson Plans
The Exploratorium
American Museum of Natural History: OLogy
University of Michigan: Windows to the Universe
HowStuffWorks

Metric Conversion

Rough Science Metric Converter (interactive metric converter)
NOVA: Metric Conversion (printable conversion chart)

Sound & Electricity

Science Museum of Minnesota: The Sound Site

Timekeeping & Sundials

National Institute of Standards and Technology: A Walk Through Time

Weather

NASA: National Aeronautics and Space Administration
NOAA: National Oceanic and Atmospheric Administration
The Ocean Conservancy

General Interest

Dragonfly TV
National Science Teachers Association
The Magic School Bus
Zoom

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Major funding for Rough Science was provided by the National Science Foundation. Corporate funding was provided by Subaru.