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Factoring Large Numbers (CEC)

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Author:Tim Olson, Meadow Valley Middle School, Panaca, Nevada
Description: A grade 7 lesson plan: Have students choose a large even number, say 642. How could you tell what numbers that are all prime would go into this number? Let the students discover how many times they can divide out a group of small numbers. Then introduce the tree of organization to the process. From the Columbia Education Center collection of math mini-lessons.
Levels: Middle School (6-8)
Languages: English
Resource Types: Lesson Plans and Activities
Math Topics: Division, Prime Numbers

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