I need to shift my thinking to food waste and how to recycle food waste instead of throwing it away. $30 billion of wasted food annually in the U.S., that is a lot of food.
This site contains free lesson plans on consumption, energy, food, transportation, and water. The site has limitless opportunities, whether you use it as a starting point for a lesson, to teaching the whole curriculum. Note that the site is FREE, and the lesson plans can be adapted to the younger grades.