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Project LEARN pages are in the process of moving to our parent website at the UCAR Center for Science Education (

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Click on the activity titles to access the teachers' guides. Click on the student guides to access the related student materials. When you're finished with the activities, either click on Background Material (above) if you want to review the material again, or click on another unit to swtich units.

Tropospheric Ozone Activities


Ozone Attack

Student Guide

6 to 9
  • Variable, depending on the nature of the student experiment


Shoenbein Paper

7 to 9

  • Will vary depending on the nature of the student experiment.