Activity
Varsity Tutors

Varsity Tutors: Hotmath: Practice Problems: Greatest Common Factor 2

For Students 9th - 10th Standards
Twenty-four problems present a variety of problems working with finding the greatest common factor and finding prime factorizations. They are given with each step to the solution cleverly revealed one at a time. You can work each step of...
eBook
Math Planet

Math Planet: Pre Algebra: Finding the Greatest Common Factor

For Students 6th - 8th Standards
Gain an understanding of how to find the greatest common factor by viewing examples and a video lesson. [1:47]
Activity
Other

Help With Fractions: The Greatest Common Factor

For Students 3rd - 8th Standards
Two different methods of finding the greatest common factor are explained at this one page website. It is very easy to follow the step by step directions.
Activity
Texas Instruments

Texas Instruments: Finding the Gcf

For Teachers 6th - 8th Standards
Students simplify fractions by dividing the numerator and denominator by the GCF (the greatest common factor). They check their work by using a calculator.
Activity
Discovery Education

Discovery Education: Web Math: Factoring Polynomials by Finding the Gcf

For Students 9th - 10th
This WebMath online tool is useful for factoring polynomials by finding the greatest common factor. Simply plug the numbers in and you are on your way!
Lesson Plan
Better Lesson

Better Lesson: Finding the Greatest Common Factor

For Teachers 6th Standards
In this lesson students can use different strategies to find the GCF of numbers less than 100.
Unknown Type
McGraw Hill

Glencoe: Self Check Quizzes 1 Greatest Common Factor

For Students 9th - 10th Standards
Use Glencoe's randomly generated self-checking quiz to test your knowledge of how to find the greatest common factor. Each question has a "Hint" link to help. Choose the correct answer for each problem. At the bottom of the page click...
Unit Plan
CK-12 Foundation

Ck 12: Arithmetic: Greatest Common Factor Using Factor Trees

For Students 6th Standards
[Free Registration/Login may be required to access all resource tools.] Find the greatest common factor of a given numbers using factor trees.
Unit Plan
CK-12 Foundation

Ck 12: Arithmetic: Greatest Common Factor Using Lists Grade 6

For Students 6th Standards
[Free Registration/Login may be required to access all resource tools.] Find the greatest common factor of a given number using lists.
Unit Plan
CK-12 Foundation

Ck 12: Arithmetic: Greatest Common Factor Using Lists Grade 6

For Students 6th Standards
[Free Registration/Login may be required to access all resource tools.] Find the greatest common factor of a given number using lists.
Unit Plan
Scholastic

Scholastic: Study Jams! Math: Fractions: Greatest Common Factor

For Students 5th - 6th Standards
Complete a step by step process to determine the greatest common factor.
Lesson Plan
Better Lesson

Better Lesson: Gcf and Lcm Project Gallery Walk

For Teachers 6th Standards
Sixth graders further their understanding of finding the greatest common factor and least common multiples.
Activity
Cool Math

Coolmath: Gcf's and Lcm's Greatest Common Factor

For Students 4th - 7th Standards
Understand how to find the greatest common factor.
Activity
Discovery Education

Discovery Education: Web Math: Greatest Common Factor

For Students 9th - 10th
This WebMath site contains a tool for locating the greatest common factor. Simply plug in the numbers and you are on your way! Use it to check your answers.
Interactive
Other

Greatest Common Factor Calculator

For Students 9th - 10th Standards
Free online calculator provides help with finding the greatest common factor.
Unknown Type
McGraw Hill

Glencoe: Self Check Quizzes 2 Greatest Common Factor

For Students 6th - 8th Standards
Use Glencoe's Math Course 2 randomly generated self-checking quiz to test your knowledge of greatest common factors. Each question has a "Hint" link to help. Choose the correct answer for each problem. At the bottom of the page click the...
Activity
Purple Math

Purplemath: Lcm & Gcf

For Students 9th - 10th Standards
Purplemath shows an easy and orderly way to determine the GCF and LCM of any two numbers. Even large numbers won't be a challenge with this method.
Unit Plan
Math.com

Math.com: Greatest Common Factor/practice Calculator

For Students 9th - 10th
A page which generates number pairs and allows the user to find and enter the GCF. Keeps a running tally of correct/incorrect answers and has links to in depth review, if needed.
Unknown Type
Soft Schools

Soft Schools: Greatest Common Factor Worksheet

For Students 9th - 10th Standards
Find the greatest common factor between two numbers. You may set the total number of problems per page, the minimum and maximum numbers, and an answer key is optional.
Activity
Texas Instruments

Texas Instruments: Greatest Common Factor

For Teachers 6th - 8th Standards
Students use a graphing calculator to find the Greatest Common Factor of two or more numbers.
Activity
Texas A&M University

Wtamu Virtual Math Lab: Intermediate Algebra: Gcf and Factoring by Grouping

For Students 9th - 10th
Excellent tutorial on GCF of polynomials, including examples and step-by-step instruction on factoring.
eBook
Mathigon

Mathigon: Math Foundations: Divisibility and Prime: Greatest Common Factors

For Students 6th - 8th Standards
This lesson focuses on the greatest common factors it poses real situations and asks students answer them and then it provides more information and more exercises.
Lesson Plan
Better Lesson

Better Lesson: Gcf and Lcm Project, Day 2

For Teachers 6th Standards
Sixth graders find the greatest common factor and least common multiple of numbers.
Unit Plan
Khan Academy

Khan Academy: Greatest Common Factor

For Students 5th - 7th Standards
Find the greatest common factor of 2 or 3 integers. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.

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