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Interactive
PBS

Pbs Learning Media: Slavery and the u.s. Constitution

For Students 3rd - 8th
Lesson focuses on the debate over slavery at the Constitutional Convention in 1787.
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Handout
Social Studies Help Center

Social Studies Help Center: How Does the u.s. Free Enterprise System Operate?

For Students 4th - 8th
Covers explanations of the basic concepts for understanding what free enterprise is and how it works.