Middle School Programs Building Healthy Core Learning Math 6 PLUS, Unit 2

Math 6 PLUS UNIT 2 OVERVIEW: LCM, GCF, and Prime Factorization Unit Outcomes At the end of this unit, your student should be able to:  Find the greatest common factor (GCF) of two numbers  Find the least common multiple (LCM) of two numbers  Find the prime factorization of a number

Key Vocabulary Terms to deepen the student’s understanding  Abundant Number  Composite Number  Deficient Number  Factor  Greatest Common Factor  Least Common Multiple  Multiple  Perfect Number  Prime Factorization  Prime Number  Relatively Prime  Venn Diagram

Key Standards Addressed

Where This Unit Fits

Connections to Common Core/NC Essential Standards

Connections to prior and future learning

6.NS.4 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 or as a multiple of a sum of two whole numbers with no common factor.

Coming into this unit, students should have a strong foundation in  Basic Multiplication facts (0-12)  Divisibility Rules  Ability to Compare Numbers

This unit builds to the following future skills and concepts:  Factoring polynomials  Solving for an unknown in an equation or inequality

Additional Resources

“Learning Checks”

Materials to support understanding and enrichment

Questions Parents Can Use to Assess Understanding

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Teaching videos made by WCPSS Teachers WCPSS YouTube Channel – Math Playlist Divisibility Rules Prime Factorization Video Explanation Greatest Common Factor Video Explanation Least Common Multiple Video Explanation LCM and GCF Rags to Riches Review Game LCM Sudoku Challenge

 What is the difference between a prime and composite number?  When might you use LCM or GCF outside of the classroom?  What key phrases is a word problem would tell you to solve for LCM or GCF?

* Please note, the unit guides are a work in progress. If you have feedback or suggestions on improvement, please feel free to contact [email protected].