Lessons for Understanding Our Water Footprint” are a useful part of an environmental science curriculum. These high-school and undergraduate environmental science lessons build student awareness of direct and indirect (also known as virtual) water use . Three free, downloadable lessons encourage students to explore how their food choices and shopping habits have a larger impact on their daily water consumption than they may realize. Designed for high school – upper secondary level, ages 15 to 18 – these interactive lessons can be easily adapted to the undergraduate level.