# The Number System: Discovering When to Find the GCF Lesson Plan (Grades 6 & 7)

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(284 KB|6 pages)
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Who: This mathematics lesson plan is geared towards seventh grade students as a review of sixth grade concepts, or it can be used for sixth graders.

What: Finding the Greatest Common Factor has applications in real life and is a practical skill that students will need to master for more advanced math and science courses, as well as for their future careers and home lives.

Where: This lesson plan can be used in grades 6 or 7 mathematics classes.

When: This lesson plan is geared towards small groups. In seventh grade, it can be used at the beginning of the school year as a review of sixth grade concept, GCF. In sixth grade, it can be used when teaching GCF.

Why: It is important that students are aware of the various situations where this skill can be used. In this lesson, students will use everyday situations to determine when and how to find the GCF.

Find the greatest common factor of two whole numbers less than or equal to 100 and the least common multiple of two whole numbers less than or equal to 12. Use the distributive property to express a sum of two whole numbers 1–100 with a common factor as a multiple of a sum of two whole numbers with no common factor. For example, express 36 + 8 as 4 (9 + 2).
Total Pages
6 pages
Does not apply
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N/A
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