A 16-page Teacher's Resource Guide (TRG) CD for each title includes research-based reproducible activities which extend key reading strategies including decoding, vocabulary skills, activating prior knowledge, fluency, and more. Simply select and print the activities that you need.Guided by Time Magazines list of 100 most influential people, the Biographies of the 20th Century series of softcover 64-page biographies focuses on the leaders, scientists, and icons who shaped our world. These people, many from very humble beginnings, changed how the world works. Each biography includes a glossary, timeline, and illustrations. An individual guide for each title provides reproducible activities to extend the text.