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Physical Science

  • Activities with UV Beads Ultraviolet-sensitive beads change color when exposed to ultraviolet (UV) light. They are inexpensive, yet give students a way to detect the presence of UV light, which is normally invisible to humans. Here are 2 inquiry-based activities that enable students to investigate UV light using these remarkable beads. View »
  • Infographic: Simple Machines This infographic profiles four of the six simple machines: inclined plane, pulley, lever, wheel and axle. View »
  • The Problem with Pulleys Build and test working models of pulley systems commonly used in problems in physics texts and tests. View »
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