# CK-12

## PARTNER PROFILE

CK-12 provides open-source high quality K-12 learning platform to help teachers provide learning opportunities for students globally. Free access to 5000+ high-quality, customizable educational concepts in multiple modalities (text, videos, quizzes, images etc.) suited to different learning levels will allow teachers, students and others to innovate and experiment with new models of learning. Learn more at: www.ck12.org/teacher

Total lessons: 668

(11 Ratings)

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## Prime and Composite Numbers

CK-12
Updated:
Friday, August 5, 2016 - 2:53pm
• Math
• Middle School
Identify and classify numbers as either prime or composite. <BR> composite number Divisibility Rules Factors MAT.ARI.160.L.1 prime number

## Factor Pairs

CK-12
Updated:
Friday, August 5, 2016 - 2:53pm
• Math
• Middle School
Determine the factor pairs of given numbers. <BR> factor MAT.ARI.171.L.1

## Common Factors & Greatest Common Factor

CK-12
Updated:
Friday, August 5, 2016 - 2:53pm
• Math
• Middle School
Identify common factors.

## Greatest Common Factor Using Lists

CK-12
Updated:
Friday, August 5, 2016 - 2:53pm
• Math
• Middle School
Find the greatest common factor of a given number using lists. <BR> factor GCF greatest common factor MAT.ARI.172.1.L.1 Product

## Greatest Common Factor Using Factor Trees

CK-12
Updated:
Friday, August 5, 2016 - 2:53pm
• Math
• Middle School
Find the greatest common factor of a given numbers using factor trees. <BR> factor factor tree GCF greatest common factor MAT.ARI.172.2.L.1...

## Divisibility Rules to Find Factors

CK-12
Updated:
Friday, August 5, 2016 - 2:53pm
• Math
• Middle School
Determine the factors of given numbers using divisibility rules. <BR> Divisibility Rules Factors MAT.ARI.173.L.1

## Least Common Multiple

CK-12
Updated:
Friday, August 5, 2016 - 2:53pm
• Math
• Middle School
Find the least common multiple of a given pair of numbers using lists. <BR> common multiple LCM least common multiple MAT.ARI.174.L.1 multiple

## Fraction Comparison with Lowest Common Denominator

CK-12
Updated:
Friday, August 5, 2016 - 2:53pm
1 Comment
• Math
• Middle School
Compare fractions using lowest common denominators. <BR> denominator Equivalent fraction lowest common denominator MAT.ARI.174.1.L.1 numerator...

## Fraction Ordering with Lowest Common Denominators

CK-12
Updated:
Friday, August 5, 2016 - 2:53pm