Math-Blog.com is dedicated to promoting the beauty of Mathematics at every level. It was started in 2007 by Antonio Cangiano (acangiano@gmail.com), a Software Engineer and Technical Evangelist employed by IBM, who is very passionate about math. It began as a personal blog, but following its early success the site is now accepting external submissions and contributions by guest writers, with the long-term goal of making it a hub for those who intend to publish high quality, interesting and easy to follow mathematical articles on the Web.
GeoCommons delivers visual analytics through maps; enagbling non-technical professionals to view multiple datasets, draw conclusions, make decisions and solve problmes.
You can search different cities and find good deals on food. This would be a fun website to use when teaching about money or sales tax. Students could make a menu or figure out how much they can buy given a set amount of money.
Math lessons for high school and middle school. These lessons have been writen by teachers who participated in SCORE Mathematics workshops and is designed for teachers in California but are correlated to the NCTM standards.
This is a really big list of different math games and activities. There are puzzles and all kinds of things for every skill level. This is someones list of everything that they have found online.
You can calculate nutritional value of different foods. Gather information here that the students will be interested in as well as the teacher. You can integrate teaching about health and nutrition while learning different ways to represent data.
Safe web space for tweens. They can blog and email each other and play games. These ways of communication could be used in getting students to write about what is going on in class or creating a math blog could be a part of a project.
Great way to engage your students. You can find Bill Nye The Science Guy and School House Rock here. There is alot on the Science of Disney Imagineering.
Interactive pricing guide. You can also buy or sell things here. It would be helpful when learning about budgeting money. Percents, and sales tax could be integrated easily. A good place to collect data.