http://www.accessexcellence.org/AE/mspot/

The Mystery Spot! Use science to solve the mysteries, such as:

 
"It's a small town. There aren't supposed to be secrets. So who's spreading disease around? Nobody knows... it's up to you to find out!"

"You hired on as crew to help sail a yacht across half the Pacific. Now, two weeks later, in the aftermath of a gale 500 miles from land, you find something new added to your job description: Detective."

http://www.bbc.co.uk/learning/index.shtml

Online games and quizzes for use in school. It covers English, science, languages, weather and law.

 

http://www.censusscope.org/

U.S. Demographic trends according to Census 2000 data.

Great site for social studies, and for teaching about charts and graphs.

 

http://www.sprocketworks.com/

"Tour the night sky, play logic games, and learn how to groom a horse."

Interest for both kids and adults.

 

http://www.mcli.dist.maricopa.edu/pbl/ubuystudent/index.html

UBUYACAR. Problem based learning. You want to buy a particular car. What should your annual salary be for you to afford it?

 

http://www.fourmilab.to/yoursky/

An interactive planetarium. Help your students build a sky map.

 

http://mathforum.org/dr.math/

Have a math question? Ask Dr. Math. Elementary school through college.

 

http://www.education-world.com/a_lesson/lesson243.shtml

Education World. A website to help teachers incorporate the Internet into the classroom. Includes lesson plans.

 

http://www.enc.org/features/focus/

Online magazine with teacher written articles for math and science teachers.

 

http://math.rice.edu/~lanius/Lessons/

Fun math lessons.