http://www.geography4kids.com/files/land_erosion.html

http://www.kidsgeo.com/geology-for-kids/0059-introduction-to-erosion.php

http://library.thinkquest.org/CR0215468/force_and_motion.htm

http://library.thinkquest.org/CR0215468/force_and_motion.htm

http://www.mikids.com/Smachines.htm

http://www.coe.uh.edu/archive/science/science_lessons/scienceles1/test.htm

http://www.kidzone.ws/WATER/

http://www.epa.gov/climatechange/kids/water_cycle_version2.html

http://earthguide.ucsd.edu/earthguide/diagrams/watercycle/

http://www.dnr.state.wi.us/org/caer/ce/eek/earth/groundwater/watercycle.htm

http://www.vtaide.com/png/foodchains.htm

http://www.sheppardsoftware.com/content/animals/kidscorner/foodchain/foodchain.htm

http://kidshealth.org/kid/

http://library.thinkquest.org/5777/tour.htm

http://freeplaymusic.com/p://

http://www.edheads.org/activities/simple-Machines/

http://interactives.mped.org/view_interactive.aspx?id=110&title=

http://www.wordcentral.com//