This series is purposely designed to support the Common Core State Standards and includes a lot of features teachers will love when using these books in the classroom as a supplemental resource. These books include primary source accounts of the historical events; multiple suggestions for reading, writing, and critical thinking activities; and lots of important text features like maps, charts, diagrams, and graphs . . . . The series [i]s a mix of high-interest topics and those crucial for understanding the period. These titles are good books to be used to support the social studies curriculum focusing on westward expansion. Recommended.