Use the materials in this kit to introduce new information, stimulate discussion, and reinforce and clarify classroom concepts on World War I. Also included are 8 KIDS DISCOVER magazines on World War I, 6 National Geographic reading expedition books entitled "Seeds of Change in American History: America Enters World War I," and one Cobblestone magazine entitled "U.S. Involvement in World War I." (4 posters with teacher's guide and reproducible activity sheets/1 Cobblestone magazine/ 6 books from National Geographic).