PBS and NASA have teamed up to create lessons focused on Global Climate Change.  Each lesson includes STEM resources that will increase your knowledge of climate change concepts and can be used directly with middle and high school students.  Here are some of the topics you can explore:

• Introduction to Earth’s Dynamically Changing Climate
• Earth’s Warming Climate: Are We Responsible?
• Going Local With Global Warming
• The Climate Change Skeptic’s Argument: Natural Solar Cycles or Human Activity?

Each link above will lead you to a lesson that is broken into several modules: Engage, Explore, Explain, Elaborate, and Evaluate .  You can browse them at your own pace; pick and choose the activities that will work for you.