This product is the teacher version of a Power Point that may be used to teach about America's involvement in WWI. Please look for the student version, which is listed in my store, as well, if interested. The lesson is best used in a school that is 1:1, and the students can follow along with their version, while the teacher is displaying his/her version on the overhead. The teacher version includes lecture slides, and possible answers to student activities. The student version has blanks embedded within the lecture slides, as well as activities for students to complete. One activity, for example, has students categorize the causes of World War I under either "Militarism, Alliances, Imperialism, or Nationalism." The fact that the activities are included within the PPT makes the transition from lecture to their completion seamless. I typically save my student Power Points as PDF files and push them out to my students via our school's Learning Management System. This entire PPT can take several days to get through.