Cycles of the Earth and Atmosphere
http://www.ucar.edu/learn/

LEARN: Atmospheric Science Explorers, University Corporation for Atmospheric Research

This site features an online teaching module written for middle school science teachers. It provides background information and supporting classroom teaching materials. The content focus is climate change and issues related to both stratospheric and tropospheric ozone. The site features seven sections with background material and images.

This resource is referenced here:

• Starting Point-Teaching Entry Level Geoscience:Using an Earth System Approach: EEC 340: Research-Science Elementary Teaching

Subject: Geoscience:Atmospheric Science, Atmospheric Science:Climatology
Resource Type: Course Information, Activities
Grade Level: Middle (6-8)
Theme: Teach the Earth:Incorporating Societal Issues:Climate Change, Teach the Earth:Course Topics:Atmospheric Science