A superb interactive science video from the BBC about the charactistics of matter, featuring solids, liquids and gases.
http://ictmagic.wikispaces.com/Science
Great activity to help students use NASA data in order to develop a community-based strategy to reduce greenhouse gas emission. Includes additional resources (articles, websites, NASA instruments) to help students learn about CO2 emissions, what is being done around the world, to decrease CO2 emissions, and what they can do.