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.

http://www.foodfacts.info/
Students can select which types of food they eat when they go out. The site provides nutrition information about a variety of fast-food chains nation-wide.