Houghton Mifflin Social Studies
Across the Centuries

Lesson at a Glance
Chapter 1, Lesson 2: The Expanding Horizon (pp. 10-15)

The Big Idea
Framework Concepts: Change and Technology The ways people traveled and learned about the world changed greatly between A.D. 150 and 1500.

Lesson Outline
Use the Lesson Outline to preview the content of the lesson. You may wish to print it for your students as a guide during reading.

Check for Understanding


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