• Buegler, M. E. (1988). Discovering density (grades 6-9). Berkeley, CA: University of California at Berkeley, Great Explorations in Math and Science (GEMS) Project.
• Gibson, G. (1995). Making things float and sink. Brookfield, CT: Copper Beech Books.
• Glover, D. (1993). Flying and floating. New York: Kingfisher Books.
• Science and Technology for Children (STC). (2002). Floating and sinking. Burlington, NC: Carolina Biological Supply Company.

• Several objects that float
• everal objects that sink
• Beakers (or other containers) of water
• Graduated cylinders
• Aluminum foil
• Paper clips
• Film canisters
• Small masses (such as coins, marbles, nails, rocks, and so forth)
• Balances or scales
• Several sinks or containers for water
• Cooking oil
• Corn syrup
• Bubble bath
• Salt
• Red and blue food coloring
• Various materials that could be used to build boats

Internet Resources

• ExploreLearning, Gizmos
  www.explorelearning.com*
  Interactive density labs
• MadSci Network
  www.madsci.org/experiments/archive/869327658.Ph.html*
  Buoyancy lesson
• NYU: Science Teachers Enhancement Model, Exploring Density
  www.nyu.edu/projects/mstep/lessons/density.html*
  Background information for teacher
• Bill Nye’s Buoyancy Lab
  www.billnye.com/episode_pdfs/episodeguide5.pdf* (PDF; 1 page)
  Episode on buoyancy under physical science

• Computers for conducting research and creating multimedia and publishing documents
• Projection system to share multimedia presentations with We B Toys representatives
• Digital cameras to take pictures of prototypes

• Desktop publishing for designing brochures
• Encyclopedia on CD-ROM for accessing information about vocabulary and boats
• Image processing to process pictures for presentation
• Internet Web browser for conducting research
• Multimedia for designing multimedia presentations
• Word processing for creating written work