This website gives the templates for creating PowerPoint games. Wheel of Fortune, Who Wants to be a Millionaire, Jeopardy, and Are You Smarter Than A Fifth Grader? are among the games. This will save you time in developing an interactive game to use in your classroom!! Very useful :)
This is much like the diigo site we are using, except that I think it is a little bit more kid-friendly. I would be great to use to organize websites that students could go to for a research project, for instance.
This website offers lesson examples that align with the NCTM standards. It also offers other resources that I have used in the middle school classroom.