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03:31

Lesson 3: Consequences of the War

04:29

Lesson 1: Lincoln's Leadership

04:50

Lesson 3: Shenandoah Valley

05:15

Lesson 1: Appomattox Court House

04:32

Lesson: Comparing Numbers in Scientific Notation (Segment 1)

03:39

Lesson: Comparing Numbers in Scientific Notation (Segment 3)

03:23

Lesson: Comparing Numbers in Scientific Notation (Segment 2)

03:39

Lesson: Writing Scientific Notation (Segment 1)

04:56

Lesson: Writing Scientific Notation (Segment 3)