Rotation vs. Revolution, Earth's Tilt, and Seasons

Rotation vs. Revolution

http://urbanext.illinois.edu/treehouse/seasons.cfm?Slide=2

Day and Night:

http://www.childrensuniversity.manchester.ac.uk/interactives/science/earthandbeyond/dayandnight/

Day and Night:

http://www.ictgames.com/dayNight/

Seasons on Earth:

http://highered.mheducation.com/sites/007299181x/student_view0/chapter2/seasons_interactive.html

Sunlight in Seasons (Click Continue to Interactive)

http://www.sepuplhs.org/students/iaes/simulations/SEPUP_Seasons_Interactive.swf