2nd Grade

What's the Weather, Bear?

http://www.fossweb.com/modulesK-2/AirandWeather/activities/whatstheweather.html

Heat Game

http://spaceplace.nasa.gov/en/kids/st8/thermal_loop/index.shtml

3rd Grade

Research Research

http://www.kidsastronomy.com/jupiter.htm

Picture Link
http://www.nineplanets.org/

Extra Activities

Earth, Sun, and Moon

http://www.bbc.co.uk/schools/ks2bitesize/science/physical_processes/earth_sun_moon/play.shtml

Subtraction

http://www.dositey.com/addsub/mystery2S.htm

4th

http://animals.pppst.com/hibernation.html