Preparation - Chapter 1.1a, Chapter 1.1b
Participation - Assignment P.17 7, 11, 10
Presentation - Blackboard, Student's Work
Possession
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Chapter 1.1a (5:12) 33
Chapter 1.1b (4:52) 23
Youtube: What is nebula? (6:52)
Youtube: About about star cluster (5:19)
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