**General Science:**

The 100 Coolest Science Experiments on YouTube

**Astronomy:**

- Animations
- APOD - NASA Astronomy Picture of The Day, this page will never cease to amaze and inspire.
- Celestia - Free planetarium software
- Galaxy Zoo - Classify planets for NASA to better map the Universe. while learning it yourself.
- Google Earth - Don't be fooled by the name, in addition to the Earth you can also point your view into Space.
- Google Moon
- Impact Earth - Adjust the settings to determine whether or not our Earth would be hit from outer space.
- NASA Images
- Stellarium - Free planetarium software

**Biology:**

- Body Browser - Currently in Google Labs but really useful for seeing the human body.
- Breathing Earth - A visual representation of the amount of CO2 emitted by various countries.
- Cell Biology Animations
- Dissections can be expensive so have them practice before the real thing. Salmon and Frog
- Fold It - A game where the players learn about protein folding while conducting important research.
- Online Games and Animations
- Virtual Microscope

**Chemistry:**

- Animations
- ChemCollective - Shared activities and virtual experiments
- Interactive Periodic Table
- Periodic Table - Beautiful with pictures describing the element in its naturally occurring form.
- Periodic Videos - Interesting short video about each element describing its properties and reactivity.

**Math:**

- Dr. Math - Homework help, explanations on all topics, puzzles, and simply fun math. Run through Drexel University.
- Geogebra - This should be a must have in your math classroom and every student's home computer. Allows students to visually manipulate and "play" with math concepts.
- Mathematics Illuminated - Interactive information about some of the most exciting parts of mathematics.
- Purple Math - Explains with the quality of textbook while still using accessible language for students.
- Wolfram Alpha (maker of Mathematica)
- Wolfram Alpha Examples
- The Math Playground
- Video Tutorials:
- Khan Academy - Highly recommended, great quality videos about a variety of math and non-math topics.
- Your Math Gal/Website - Provides videos aligned to the math classroom.
- YourTeacher.com - Watch the videos for free. With a paid subscription, you can gain access to online help and quizzes.

**Physics:**

- Physics Simulations
- Berkeley
- Physics Simulations
- Physics Flash Animations (not really simulations per se, but too good to pass up)
- Astronomy and Physics
- Simulations
- Phet Physics Interactive Simulations from UC Boulder
- Phun 2d Physics Sandbox

**Electronics:**