This great activity has students using an online ecological footprint generator to help them analyze how their lifestyle choices have an implact on their ecological footprint. In this activity they analyze their own footprint, the footprint of the most sustainable human and the footprint of the least sustainable human. This activity leads to a really rich discussion of ecological issues. Since this is a computer lab activity, it also makes for a great sub plan.
Have students calculate their ecological footprints so that they can see the impact their lifestyle decisions has on the planet. A one day activity that will have your students thinking critically about this issue. A great no-prep day for you or a great sub plan.