One of the most important indicators of our warming climate is the extent and thickness of polar sea ice. Currently satellites measure the extent of polar sea ice but it takes more sophisticated equipment aboard a low-flying plane to actually measure the thickness of sea ice. This lesson will show students how this is done.
Polar Bears International is a nonprofit organization dedicated to the worldwide conservation of the polar bear and its habitat through research and education. They provide scientific resources and information on polar bears and their habitat to all interested parties. There is a tools for teachers and students section complete with lesson plans, a board game, maps, and related links.