http://www.brainpop.com/science/earthsystem/earthsstructure/

http://www.brainpop.com/science/earthsystem/mineralidentification/

http://kids.nceas.ucsb.edu/

http://sciencespot.net/Pages/kdzbionature.html

http://www.gould.edu.au/foodwebs/kids_web.htm

http://www.fi.edu/tfi/units/life/habitat/habitat.html

http://www.explorelearning.com/

http://www.pbs.org/wgbh/aso/tryit/tectonics/

http://earthquake.usgs.gov/learning/kids/

http://www.ucmp.berkeley.edu/education/explorations/tours/geotime/index.html

http://www.minsocam.org/MSA/K12/K_12.html

http://www.learner.org/interactives/rockcycle/

http://www.whps.org/school/websterhill/library/scavenger%20hunts/Rocks%20and%20Minerals%20Scavenger%20Hunt.htm

http://community.weber.edu/planetarium/k12packs/All_subjects_1.html#sec_8

http://amazing-space.stsci.edu/

http://www.earthsky.org/kids/