Like my first activity I will be using both Image J and Excel.We will use Landsat images of Chernobyl(1986-1992) to measure and record the areas affected by radiation. Then we will use inferences to answer Earth Science questions.

That sounds very interesting. What exactly are you looking at to determine the area affected by radiation, the amount of vegetation? Do you have a link for the images you are using?
Thanks,
Becky

Brian, UNH has been doing a lot with a topic called "measuring vegetative health" using sat.images. I will be attending a workshop they are convening in Boston on Sat.Feb.3.If you are interested, let me know and I'll try to wrangle an invite for you.