https://subscriptions.teachtci.com/teacher/programs/338/classes
Quarter 1:
Unit 1- Early European Exploration and Colonization (Chapters 1-5)
Quarter 2:
Unit 2 - From Colonies to a Country (Chapters 6-8)
Quarter 3:
Unit 3- The United States Constitution (Chapters 9-11)
Quarter 4:
Unit 4- The Early Republic (Chapters 12-14)
Unit 5- A Changing Nation (Chapters 15-20)