Inventor's Toolbox - The Elements of Machines
http://www.mos.org/sln/Leonardo/InventorsToolbox.html

Rube Goldberg Gallery
http://www.rube-goldberg.com/html/gallery.htm

inQuiry Almanack - Simple Machines
http://sln.fi.edu/qa97/spotlight3/spotlight3.html

Work Is Simple with Simple Machines
http://www.ed.uri.edu:80/SMART96/ELEMSC/SMARTmachines/machine.html

Marvelous Machines
http://www.galaxy.net:80/~k12/machines/index.shtml

BrainPOP - Simple Machines
http://www.brainpop.com/tech/simplemachines/

Simple Machines WebQuest (J&J)
http://www.plainfield.k12.in.us/hschool/webq/webq8/jjquest.htm

Machines: Simple and Compound
http://www.howe.k12.ok.us/~jimaskew/pmachine.htm

Machines Lesson Plan for Third
http://www.ed.uiuc.edu/YLP/Units/Curriculum_Units/95-96/Simple_Machines_LWilkins/table_contents.html

Edheads - Simple Machines
http://edheads.org/activities/simple-machines/

Grade 3: Simple Machines
http://www.sasked.gov.sk.ca/docs/elemsci/gr3uhesc.html

Simple Machine Sites
http://www.oswego.org/staff/cchamber/resources/simplemachines.cfm

Simple Machines Webquest
http://outreach.rice.edu/~dgabby/science/simp_mach/

Another Webquest for Simple Machines
http://www.public.iastate.edu/~dhenry/simp/simple.html

Exploring Simple Machines
http://www.lakelandschools.org/EDTECH/Machines/Machines.htm

Still Another Machines Webquest
http://webtech.kennesaw.edu/ccarothers/wquest.htm

Mrs. Rutledge's Grade Three Simple Machines
http://www.fcps.k12.va.us/DeerParkES/kids/rodriguez/rutledge.htm
Some of My Better Lego Machines
http://www.sentex.net/~mwandel/legos/legos.html

LEGO Educational Division
http://www.lego.com/dacta/home.asp