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Environmental, Earth and Space Science

  • Understanding Unfamiliar Units: What Is a Light Year? Here's an activity that gets your students moving while they practice measuring units. By putting time and distance traveled into units students can directly relate to, the abstract concept of the light year is more easily understood. View »
  • Modeling a Comet in the Classroom Make an active comet model that’s guaranteed to grab your students’ attention. This demonstration models the nucleus of a comet using dry ice and a mixture of common ingredients found in comets. Not only does the model look like a comet, it gives off jets of vapor simulating the tail released by real comets. View »
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