You have to take a look at this article from Teach Hub! http://www.teachhub.com/free-interactive-whiteboard-resources#comment-67065 They have developed a list of the best FREE interactive whiteboard resources. Some of the sites I already use: SpellingCity, Promethean Planet, FunBrain. However, there are so many that are brand new to me. I can't wait to use them with my students! The list was just too good not to share.