Your Safer Source for Science

Since 1977

Address P.O. Box 219 Batavia, IL 60510
Phone 800-452-1261
Fax 866-452-1436

A rectangular block of paraffin is exposed to a source of light from different directions creating a discrepant event. Students make observations, ask questions, and make a hypothesis about the block of paraffin.


  • Scientific Method
  • Observations
  • Hypothesis
  • Discrepant Events