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Students will add or subtract expressions that have "two signs" between the integers. Then, they will play a game to enforce the skill, and start thinking about comparing signed numbers. In this lesson, students will adapt expressions that add or subtract two signed integers. This lesson builds on the previous lesson in the unit, where students add/subtract just a positive integer from a signed integer. Then, students will play a game that practices adding and subtracting with signed integers. The game will enforce the skill of arithmetic with integers, but will also get students thinking about maximizing their sum, and ordering signed numbers.
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