• Hewitt, S. (1998). Machines we use. New York: Children’s Press.
• Hodge, D. (1998). Simple machines starting with science. Buffalo, NY: Kids Can Press.
• Jones, C. (1991). Mistakes that worked. New York: Doubleday Dell Publishing Group, Inc. 
• Nankivell-Aston, S. (2000). Science experiments with simple machines. New York: Franklin Watts.
• Richard, J. (2000). Work and simple machines. Brookfield, CT: Copper Beech Books.
• Wells, R. (1996). How do you lift a lion? Morton Grove, IL: Whitman Publishing.

• Science journal
• Data collection and measurement tools, such as stopwatches, balance scales, and measuring tapes

• Boston Museum of Science
  www.mos.org/sln/Leonardo/InventorsToolbox.html*
  Inventor's Toolbox on this site provides information on simple machines
• COSI Science Center, Columbus and Toledo, Ohio  
  www.cosi.org/files/Flash/simpMach/sm2.html* (Macromedia Flash Player* is required.)
  Best used as a guided demonstration
• Hands-On Technology, Marvelous Machines
  www.galaxy.net/~k12/machines*
  Series of experiments involving simple machines
• The Franklin Institute
  http://sln.fi.edu/qa97/spotlight3/spotlight3.html*
  Simple Machines section shows six simple machines in action
• Rube Goldberg Gallery
  www.rube-goldberg.com/html/gallery.htm*
  A collection of Rube Goldberg inventions
• Project SMART96
  www.ed.uri.edu/SMART96/ELEMSC/SMARTmachines/machine.html*
  A collection of classroom activities
• Design and Discovery Key Concepts
  educate.intel.com/DISCOVER/DesignDiscovery/DD_Session5/default.aspx
  Background information on simple and compound machines

• Simple machines lab kit (GEMS from the Lawrence Hall of Science offers one, as well as a separate levers and pulleys kit) or other materials for creating a simple machines

• Digital camera to take pictures of simple machines for wall display 
• Internet connection for online lessons and Web site exploration and research
• Projection system to project lawn mower site for all students to participate together
• Scanner to scan pictures of simple machines that can be printed and labeled
• Video camera to take video of student machines in action

• Database or spreadsheet for graphing activities
• Desktop publishing software to publish multimedia presentation
• Encyclopedia on CD-ROM for simple machine research
• Image processing software for labeling simple machines

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