10, Lesson 9, Unit 5, Grade 7, OpenUp icon
Problem Set

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Lesson 9. Unit 5. Grade 7 Open Up Resources

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This Problem Set is a part of the Lesson 9, Unit 5, Grade 7. The purpose of this lesson is to develop the rules for multiplying two negative numbers. They interpret negative time as time before a chosen starting time and then figure out what the position is of an object moving with a negative velocity at a negative time. Understand and explain why the product of two negative numbers is positive.

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