Where Do Things Go? (game)

http://opala.org/solid_waste/where_do_things_go/opala-game.html

Moon Phases (for Moon Calendar)

http://www.hawaiinewsnow.com

(Click on 'Weather' link and you'll find the Moon Phase towards the center/bottom of the page)

Car Websites

http://www.artistshelpingchildren.org/howtomaketoycarsartscraftsideaskids.html

http://www.ehow.com/i/#article_4833265

http://www.betchalikeit.com/car.html

Water Cycle

 http://dnr.wi.gov/org/caer/ce/eek/earth/groundwater/watercycle.htm

Robot Math (Practice Your Basic Facts)

http://www.playkidsgames.com/games/robot/default.htm# 

Simple Machines

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

Biographies

http://www.dmoz.org/Kids_and_Teens/People_and_Society/Biography/

Lemonade Larry

 http://www.prongo.com/lemon/game.html

Lemonade Stand

http://www.coolmath-games.com/lemonade/

Rock Cycle

http://www.classzone.com/books/earth_science/terc/content/investigations/es0602/es0602page02.cfm

Sand

http://www.microscope-microscope.org/applications/sand/microscopic-sand.htm