Julie Yu -- Exploratorium Teacher Institute a collection of home lab experiments
Physics simulations with SDL source code!
Science Project Lab has science labs for grades 1-8
Phet Free online physics, chemistry, biology, earth science and math simulations
Virtual Cell Animation Collection
Sci-Spot.com science information and supplies
BlackGold resources for senior science
Perimeter Institute Public Lectures
The Naked Scientists
North Carolina Science, Mathematics and Technology Education Center
Shodor - A National Resource for Computational Science Education
Backyard Science
Evil Mad Scientist Laboratories
Steve Spangler Science Hands-on Science Toys & Easy Science Experiments DIYbio - support for the citizen scientist
Citizen Engineer - video and comic/ezine series about open hardware, electronics and hacking
HowToons - cartoons showing kids how to build things Consise Electronics for Geeks - include the physics and the math
Space
Dr. Jeff’s Blog on the Universe
Solar Influences Data Center - including nearly 100 years of sunspot data
Heavens Above - satellites and other things visible in the sky.
Earth Imact Effects Calculator
NASA Earth Observatory
NASA Images Archive
The Hubble Telescope: Shedding Light on the Universe
The Planets and Space Science
Astronomy Resources for Kids
Space Missions
Mars Exploration Program
NASA's Solar System Exploration Program
Near Earth Asteroid Rendezvous Mission
NASA TV
Jet Propulsion Laboratory
Kennedy Space Center
The Space Game - a game and crowdsourcing experimant to design the most fuel-efficient path to the planets
Project Apollo Archives
Space Archive - specializing in what's happening a Vandenburg Air Force Base
Astronomy
Seeing
International Dark-Sky Association
SkyMorph - looking for things that change in the sky
SETI@Home
Royal Astronomical Society - Kitchener-Waterloo Center
Telescope Reviews
Telescope Buyers FAQ
Chemistry
Periodic Table on the Web
Dynamic Periodic Table
Chemicool
Course Notes
Grade 9 Academic
Grade 10 Academic
Chemistry 11
Physics 11
Biology 12
Chemistry 12
Physics 12