This lesson includes an introduction to sustainability, ecological footprints, and resources to give students an overview of the concepts as an Earth Day activity, or before a more in-depth unit on ecology. Your students will love the organized digital notes that they'll utilize, as well as the bright and image-filled lecture slides you'll use to guide instruction. I teach this lesson as part of a 3-day microunit with my 11th grade environmental science class before we dive into our huge ecolog