Evolution - Prerequisite Understanding
In order to understand how evolution through natural selection works, you need to have a good understanding of what makes organisms different from one another and the way those differences might lead to a better or worse chance to survive.
Much of what you need to know you learned in 7th grade. However, you'll need a deeper understanding of some of those topics. I am providing links with the materials we have used in class. In addition to the materials listed below, you will also need to know the information covered in the Khan Academy assignments I had you enroll in.