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Greatest Common Factor & Least Common Multiple

Greatest Common Factor & Least Common Multiple

Author: Kathy Jones

Finding the Greatest Common Factor & Least Common Multiple of two numbers.


After a discussion of what students knew about GCF & LCM, and they demonstrated how they would go about finding their solutions.  I showed the Venn Diagram Method, then the Modified Flow Chart.  Students had a choice of how they wanted to solve these types of problems.

This choice was important as the closing of this lesson is a creation of a problem, a solution, made in the app of their choice from their device, shared to teacher and class, then presented.  The student receives a math grade as well as a Tech/Presentation grade.

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Student reference for finding the GCF & LCM of two numbers.