I used this lesson in my sustainability elective and it helped students better understand the role education can play in shaping individual behaviors. I adapted it for my high school class by making a copy of the slides and deleting the ones I thought covered information they had already learned. We are using it as a launchpad for project-based learning as students develop their own lessons for elementary school students on a sustainability topic. It generated a lot of good discussion and thinking about our own capacity to change, as well as the need for systems in place to help, as well as the challenges people face due to circumstances related to socio-economics or geography, for example. I highly recommend this lesson for middle or high school!