Cells Alive! Great graphics on this site, including animations of cells. There are some puzzles as well, and just let me warn you - they are addicting. I spent 15 minutes putting together the streptococcus puzzle. The Science of Baseball You didn't think there was any science to baseball? Think again! Check your reaction time to see if you could hit a baseball thrown at 95 miles per hour. Other fun stuff including activities and experiments. Science Buddies This site is great if you need to find a good science project in a hurry. Click on the "Project Ideas" link, and you'll see a whole bunch of different topics to choose from. You can choose projects that match your grade level - anywhere from first grade to senior in high school. Science Fair Project Ideas Another one of About.com's great sites. All sorts of science fair ideas, sorted by topic and by grade level. Top Halloween Chemistry Projects Instructions for making fake blood, a glow-in-the-dark pumpkin, dry ice fog - even fake ectoplasm! Scroll down to the bottom of the page and you'll find links to ideas for costumes, food, even a "mad scientist party"! NASA (National Aeronautics and Space Administration) for Students Very comprehensive site. And you would expect that, right? I mean it is NASA. The people that have actually gone into space. Separate sections for Grades 9-12, 5-8, K-4. Space Race This site is sponsored by the Smithsonian National Air and Space Museum. Great background on the history of the "Space Race" between the United States and the Soviet Union. Great images and a clear and simple explanation. Sky & Telescope Magazine Yeah, this is a magazine, but you don't have to pay anything to view their website, and there is a lot of really good, basic inforamtion about astronomy, including topics like: "Words Ya Gotta Know", "How to Start Right in Astronomy", "Names of the Stars", and more.

NASA (National Aeronautics and Space Administration) for Students Very comprehensive site. And you would expect that, right? I mean it is NASA. The people that have actually gone into space. Separate sections for Grades 9-12, 5-8, K-4.

math.com - Algebra The nice thing about this site is that it lets you choose the type of problem you need to work on, and then it takes you through four steps....1) a first glance, or simple overview, 2) an in-depth explanation, 3) examples, and finally 4) a chance for you to practice on some real problems.

Algebra Equation Calculator This is a pretty complete site - and there's something really cool - an automated equation calculator. The website says that the current release of this Equation Calculator has solved over six million equations!

www.algebra.com This is one of the best sites. It's created by people who really love algebra (who ARE these people??). Don't click on any advertising links - just stick to the center area, find the type of problem you're working on, and you'll be able to see lessons, example problems, and more. It's great.

Whole Frog Project OK, this is pretty cool - you can dissect a frog online. Well, obviously not REALLY....but pretty close! Just jump to the "Virtual Frog Dissection Kit", and then don't forget to click on the "Help" file - it will give you some tips for how to move the frog around.