After looking at the history of cataract surgery techniques, your high schoolers will have a new perspective on medical and scientific advances. Kids alternate between watching short video clips, class discussion, and computer research. The lesson plan suggests three computers for the class, but if you have access to more computers, it will increase engagement. Once the history of cataracts is covered, there is a culminating project in which groups select another historic medical or scientific innovation to research and present to the class.