We invite you to explore PBS LearningMedia™! or here.  Global
Climate Change: Understanding the Greenhouse Effect  Grades:
6-12 Login with your PBS account  Lesson Summary    (Note: This
is the first of two global climate change lesson plans. You may
want to follow this lesson with Global Climate Change: The
Effects of Global Warming Lesson Plan .)     • Understand what
global climate change is and how it affects our lives   • Learn
about greenhouse gases and begin to consider what events are
causing an increase in the amount of greenhouse gases in the
atmosphere  Grade Levels: 6-8 , 9-12  Suggested Time  Two class
periods  Multimedia Resources   For each pair or small group of
students:    • three thermometers   • two clear glass jars that
will fit over the thermometers   • sun lamp or sunny windowsill
• paper towels   • Scientific notebooks or journals for
recording data and observations   • Graph paper  One clock to be
used by the entire class  Before the Lesson  If possible,
arrange computer access for