A great way to do vocaulary prep while creating global social awareness.

I love this site because of how nicely it plays w/ our SMART Boards. It has become a great tool for initiating discussions in ELA classrooms. Simply hit the "Random" button and discuss the word w/ your class. You can of course use this as a vocabulary extension activity as well. I worked w/ one class using Visuwords where we tried to predict (as a class and in small groups . . . nice way to allow for differentiation) related nouns, verbs, etc. This activity created engaging classroom discussion!

In the schools where we have access to a SMART Board we use the pens to write our predictions, capture them to the Notebook and then discussed the discrepancies. Let me know how you use it in your classroom!

nicely arrainged and standards based java based math manipulatives

cool 3D environment for interactive whiteboards

These guys are expectional and I have really enjoyed thier video podcasts. 

Well done and thorough . . . I know they are also updating the format so check back often.