Environmental Science for AP - Edition 2 Textbook Chapter 1: "Environmental Science". The zip file contains a 54 slide Powerpoint and a 4 page student fill-in that accompanies the powerpoint. Many of my students struggle with the concepts and memorization, so all my materials are very visual and attempt to explain the concepts simply, but effectively. All slides have pictures that assist in understanding the information. There are also 7 video links (total 22 minutes).