The first two clips are great to use for studying communities. The first clip discusses the definition of communities and provides examples. The second clip introduces government and discusses laws.
Awesome list of Web 2.0 tools - list of tools that can be used and notes on each one that allow teacher to see uses in the classroom. Great list to reference
Great link, shared by Mrs. Hilt with my math class. Symmetry in animals, architecture, and art. Activities at the end, test the students knowledge of symmetry.
This is an example of how a teacher uses VoiceThread in her reading groups to facilitate discussion regarding prediction, comprehension, etc. This is awesome - a great way to incorporate technology as a tool in your teaching