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.
Varsity Tutors
Varsity Tutors: Hotmath: Graphing Calculator Practice Problems Number Theory
Practice using your graphing calculator for number theory problems, including prime factorization, greatest common factor, least common multiple, and scientific notation. If you get stumped or if you would like to check your work, then...
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: Elem Math: Greatest Common Factor
[Free Registration/Login may be required to access all resource tools.] For this learning module, students are asked to identify the greatest common factor of two whole numbers that are one or two digits. Includes video demonstrating a...
CK-12 Foundation
Ck 12: Elem Math: Reducing Simplest Form Word Problems
[Free Registration/Login may be required to access all resource tools.] For this learning module, students must solve word problems where they are asked to reduce fractions to their lowest terms. Includes video demonstrating a sample...
Discovery Education
Discovery Education: Web Math: General Math
An extraordinary site that will help you with your math homework. Presented in a format that is both easy to understand and educational. Navigate through numerous instant-answer, self-help math solvers to help you figure out your math...
Cool Math
Coolmath: Coolmath4kids: Simplifying Fractions
Short tutorial explaining how to simplify fractions. Includes sample problems to try.
Lawrence Hall of Science
The Math Page: Skill in Algebra: Common Factor
Here is a site that thoroughly explains many topics related to factoring out the greatest common factor from a sum or a polynomial expression. There are example problems, problems for the student to attempt, and answers to the student...
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.
Purple Math
Purplemath: Algebra Resources
Purplemath contains about 40 different lessons on various algebra topics. The lessons are divided into five different sections: preliminary topics, beginning algebra, intermediate algebra, advanced algebra, and word problems. The lessons...
Illustrative Mathematics
Illustrative Mathematics: 6.ns Bake Sale
This task asks students to apply the concepts of factors and common factors in a real-world context. Aligns with 6.NS.B.4.
Illustrative Mathematics
Illustrative Mathematics: 6.ns Factors and Common Factors
This task asks students to apply the concepts of factors, common factors, and the greatest common factor in an abstract context. Aligns with 6.NS.B.4.
Better Lesson
Better Lesson: Review & Assessment 6.ns.a.1 and 6.ns.b.4
This lesson brings all the pieces together to have students show the how's and why's by using GCF,LCM, Distributive property and dividing fractions.
Better Lesson
Better Lesson: Multiples, Lcm, and Gcf
What are multiples? How do they compare with factors? Students work to answer these questions and develop an understanding of greatest common factor and least common multiple.
Better Lesson
Better Lesson: Prepping for the Exam!
Practicing math problems is a great way to study for a math test!
Better Lesson
Better Lesson: Greatest Common Factor & Least Common Multiple
Clearly understand the difference between factors and multiples builds a foundation for applications and problem solving using GCF and LCM.
Cuemath
Cuemath: Highest Common Factor
Explore the world of Highest Common Factor or Greatest Common Factor (GCF) by going through its various aspects and properties. Find answers to questions like what is the highest common factor for a group of numbers, easy ways to...
PBS
Pbs: Greatest Common Factor
In this video, learn how to find the greatest common factor of two numbers. Then, see how this can be used to solve problems with large numbers. In the accompanying classroom activity, students learn to find prime factors using factor...
Better Lesson
Better Lesson: Finding the Greatest Common Factor
For this lesson students can use different strategies to find the GCF of numbers less than 100.
Help Algebra
Help algebra.com: Steps for Factoring Trinomials
Ever have trouble knowing where to start factoring? This summary gives steps for how to factor and tips on what to look for in the quadratics.
AAA Math
Aaa Math: Practice Finding Greatest Common Factor
This lesson contains a learning exercise in which the user has to find the greatest common factor and type it in. The exercise keeps track of how many right and wrong answers given and gives you a grade.
University of Georgia
University of Georgia: Greatest Common Factor
This is geared to teachers with the objective of helping learners use their TI-34 calculators to find the greatest common factor. Includes working examples.