McGraw Hill
Glencoe: Self Check Quizzes 2 Greatest Common Factor
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...
CK-12 Foundation
Ck 12: Arithmetic: Greatest Common Factor Using Factor Trees
[Free Registration/Login may be required to access all resource tools.] Find the greatest common factor of a given numbers using factor trees.
CK-12 Foundation
Ck 12: Arithmetic: Greatest Common Factor Using Lists Grade 6
[Free Registration/Login may be required to access all resource tools.] Find the greatest common factor of a given number using lists.
CK-12 Foundation
Ck 12: Arithmetic: Greatest Common Factor Using Lists Grade 6
[Free Registration/Login may be required to access all resource tools.] Find the greatest common factor of a given number using lists.
Other
Help With Fractions: The Greatest Common Factor
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.
Better Lesson
Better Lesson: Gcf and Lcm Word Problems
When would you come across GCF and LCM? Students apply their knowledge of GCF and LCM to solve word problems.
Scholastic
Scholastic: Study Jams! Math: Fractions: Greatest Common Factor
Complete a step by step process to determine the greatest common factor.
Better Lesson
Better Lesson: Gcf and Lcm Quiz
Sixth graders show what they know about greatest common factor and east common multiple.
Better Lesson
Better Lesson: Gcf and Lcm Word Problems
Sixth graders differentiate between greatest common factor and least common multiple word problems.
Better Lesson
Better Lesson: Gcf and Lcm Project Gallery Walk
Sixth graders further their understanding of finding the greatest common factor and least common multiples.
Better Lesson
Better Lesson: Gcf and Lcm Project, Day 1
Sixth graders collaborate on a greatest common factor and least common multiple project.
Cool Math
Coolmath: Gcf's and Lcm's Greatest Common Factor
Understand how to find the greatest common factor.
Other
Greatest Common Factor Calculator
Free online calculator provides help with finding the greatest common factor.
Math Planet
Math Planet: Pre Algebra: Finding the Greatest Common Factor
Gain an understanding of how to find the greatest common factor by viewing examples and a video lesson. [1:47]
Texas A&M University
Wtamu Virtual Math Lab: Intermediate Algebra: Gcf and Factoring by Grouping
Excellent tutorial on GCF of polynomials, including examples and step-by-step instruction on factoring.
Math.com
Math.com: Greatest Common Factor/practice Calculator
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.
George Mason University
Margo Mankus: Investigating Lcm and Gcf Using Rods
This lesson plan is for an activity using rods (Cuisenaire Bars) to help students understand the concept of factors, in particular the LCM and GCF of two numbers.
Soft Schools
Soft Schools: Greatest Common Factor Worksheet
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.
Discovery Education
Discovery Education: Web Math: Greatest Common Factor
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.
Purple Math
Purplemath: Lcm & Gcf
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.
Texas Instruments
Texas Instruments: Finding the Gcf
Students simplify fractions by dividing the numerator and denominator by the GCF (the greatest common factor). They check their work by using a calculator.
Texas Instruments
Texas Instruments: Greatest Common Factor
Students use a graphing calculator to find the Greatest Common Factor of two or more numbers.
Mangahigh
Mangahigh: Number: Least Common Multiple and Greatest Common Factor
This site provides students practice with the concept of least common multiples and greatest common factors. Students can learn about the topic by completing an interactive tutorial. Students can then take a ten question timed test to...
Discovery Education
Discovery Education: Web Math: Factoring Polynomials by Finding the Gcf
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!