science
Khan Academy- a goldmine of free math, science and economics videos
Khan academy is an amazing resource. It's a HUGE collection of videos, all featuring a smart man with a gift for clearly explaining the complex, carefully going through a wide range of topics, all clearly organized. There's everything from classic brain teasers, to arithmetic, to high school level math, including calculus and differential equations, to biology chemistry, physics, and economics. The graphics in the videos are fairly simple, and the tone is very friendly, conversational and often funny.
"Fieldwork" hands-on high school level marine biology for/by homeschoolers
A homeschool mom is generously sharing the marine biology course she's developing for her kids. Alas, the marine biology course isn't for those of us who live far from the ocean, but it's a very cool program for coastal families.
The Home Physics blog
Written by a contributor to GeekDad, this blog has lots to offer the homeschooler looking to investigate physics at home. Posts recount the authors experiments with his own children, explaining what worked and what didn't. His experiments generally use equipment you're likely to have on hand at home, or can purchase for a reasonable cost, and are appropriate for a large age-range-- younger kids can benefit from being exposed to the concepts while older/more advanced kids can use the experiments to understand more comple
The Periodic Table of Videos
A collection of funny, informative videos about each of the elements of the periodic table. Produced by the University of Nottingham. One of those wonderful sites that has a little something for everyone, from early elementary aged kids through adults. (To visit the site, click on the thumbnail above.)
Online Electronic Circuit Simulator
This free online tool requires java. It will let you see how voltage and current change in a range of circuits as you alter the components.
Leonardo's Basement
Location
Animated Geography
Animations to demonstrate various processes in physical geography. (informative and interesting, but not funny)
Classic Science: Elementary Life Science
A FREE curriculum, available to download and print. Based on a quick check, it appears that the curriculum makes no mention of evolution or the origin of life.