PBS Learning Media has posted a detailed lesson plan on "Understanding the Greenhouse Effect." The grade levels are stated as 6-8,9-12. However, with some tweaking and restating, the topic could be easily covered at lower levels among adults. Of course, the videos can be used for all levels. I can share several tips to help you simplify content of lower-level readers and writers. Alternatively, higher-level students can practice rewriting content for their peers. After all, we do learn what we teach? Don't we?
Please comment on how you will or might use this plan among your students. Ideas? Other resources? Leecy