Flash Classroom is a site I just learned about from Zarco English. This is an excellent site which provides K-12 resources that use Flash technology in the classroom. This site provides ways to create content using flash as well as excellent ideas used throughout the world.
Super Teacher Tools is a great site for teacher resources where everything as free and includes: games, downloads, and other helpful tools that can assist educators in their teaching. All that is needed to use this site is Flash which allows students/teachers to play games, create seating charts, and even generate names in a random order (much better then picking names out of a hat).
Give Super Teacher Tools (check out classroom tools) a look by clicking here.
RCL is a great new site where you can create animated/flash based charts. What separates this online tool from others is its simple user interface and it's unique interactive design.
I just created a graph on here and it took me less then 5 minutes. Plus, it has a feature to import existing data, so if you have an excel spreadsheet you can easily upload it too. Another great feature is the ability to either export to Flash/PP or your blog/website. To top it all off this site is totally free (special cases may require a subscription).