HippoCampus provides high school and college students with multimedia help on a variety of science and math topics. Having trouble understanding your physics lesson? Watch a video demonstration on HippoCampus for a different take on the subject.
Access abstracts and full research articles from this peer-reviewed journal published by the Public Library of Science (PLoS). PLoS is a nonprofit organization of scientists and physicians committed to making the world's scientific and medical literature a public resource.
An online magazine featuring quick takes on the latest research on a wide variety of science topics.
WebMath covers K-8 math, general math, Algebra, Trig & Calculus, etc, and doesn't only give the answer but shows how to arrive at it. Also has conversion calculators, personal finance math, and "everyday math".