This Common Core number system lesson teaches students how to find the greatest common factor of two whole numbers. The lesson includes research-based strategies and strategic questions that prepare students for Common Core assessments. In this lesson, students find the greatest common factor of two whole numbers by finding all factors of both numbers and comparing them. This lesson also includes real-world word problems for students to solve. In addition to the lesson, there are four pages of Independent Practice with questions modeled after the Common Core assessment items.
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