This site offers tons of video clips to introduce and expand on classroom topics in a variety of content areas.  Be sure to check out the teacher resources as well as the lesson planner options.

 

This site offers a variety of lessons and acitivites that directly correlate to the NCTM math standards.

 

A great site for teachers, students, and parents alike.  Offers a homework help section, online tools, puzzles, and a problem of the week.

 

A fantastic site including a variety of lesson plans that integrate various content areas with music and technology. 

 

A fantastic resource of free clipart to use for educational purposes.

 

 

Another great site for free images to use on your website or multimedia presentations.