Richard Byrne has a great blog highlighting free technology for teachers.  This entry includes math games.

Relatively new site that prides itself on quality videos

Comprehensive list of web' 2.0 tools in several categories

Classroom 2.0 LIVE archives from March, 2011.  Includes Voicethread

 In the middle of the page is a power point with 51 ways to use Wordle.  I liked it because it gave me some ideas on how I could use it.  Used with root words, maybe animals.. (rec by Melissa Fitzgerald)

Free open source planetarium for your computer (rec by Melissa Fitzgerald)

Books read by members of SAG

daily writing prompt site that publishes prompts on a monthly calendar. The whole month is laid out for you with a different prompt each day. Don't see anything you like on the current calendar? That's okay, click through the previous months to find old prompts. Periodically, Toasted Cheese holds writing contests which you can learn about by clicking on the links on the calendar. The writing contests are based on one or more of the prompts from the calendar. Applications for EducationIf you're looking for some ideas to stimulate creative writing by your students, check out Toasted Cheese. The option to go back to previous months' prompts gives you plenty of options for finding a prompt appropriate for your classroom. 

Math Books for Kids

Bloom's reading questions for first grade

First grade teacher blog (rec by Christy Branham)

Ning community sharing SmartBoard resources.  (May be blocked at school)

Lessons and resources using Adobe products

Math resources from NCTM, including many manipulatives

Great resource from Annette Lamb on using graphic resources for differentation.  Includes many useful links and ideas.

Complete unit on measurement.  Includes videos

SciLinks are chosen by NSTA as the best sites for science.