Interactive
Topmarks Online

Topmarks: Multiples and Factors

For Students 4th - 6th Standards
A multiple-choice game with two game modes. In the first, you need to identify the Lowest Common Multiple and in the second the Highest Common Factor. Questions increase in difficulty depending on accuracy.
Website
Mayo Clinic

Mayo Clinic: Multiple Sclerosis

For Students 9th - 10th
Site offers helpful advice for relieving symptoms for patients living with Multiple Sclerosis. Discusses: causes, risk factors, independence, treatment, and more.
Unit Plan
Khan Academy

Khan Academy: Identify Factors and Multiples

For Students 3rd - 5th Standards
Demonstrate understanding of factors and multiples. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Lesson Plan
University of Nottingham

Mars: Finding Factors and Multiples

For Teachers 6th Standards
This lesson is intended to help you to assess how well students are able to understand the meanings of the terms 'Greatest Common Factor' (GCF) and 'Least Common Multiple' (LCM). PowerPoint slides are provided for this lesson.
Unknown Type
Amby Duncan-Carr

Greatest Common Factor/online Lesson

For Students 9th - 10th
A complete lesson on Greatest Common Factors, including methods of finding, examples, and a practice multiple-choice quiz.
Interactive
Doina Popovici

Math Play: Factors and Multiples Game

For Students 5th - 7th Standards
A jeopardy style game that students can play with others or alone to practice their skills at identifying multiples and factors.
Unit Plan
Khan Academy

Khan Academy: Factors and Multiples Intro

For Students 4th Standards
Explains what factors are and uses images to visualize the different factors of whole numbers. Next, discusses how to find factors without images and how to identify factor pairs. Multiples are then explained and how they relate to...
Lesson Plan
Better Lesson

Better Lesson: Gcf and Lcm Word Problems

For Teachers 6th Standards
When would you come across GCF and LCM? Students apply their knowledge of GCF and LCM to solve word problems.
Lesson Plan
Better Lesson

Better Lesson: Gcf and Lcm Quiz

For Teachers 6th Standards
Sixth graders show what they know about greatest common factor and east common multiple.
Lesson Plan
Better Lesson

Better Lesson: Gcf and Lcm Word Problems

For Teachers 6th Standards
Sixth graders differentiate between greatest common factor and least common multiple word problems.
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.
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.
Lesson Plan
Better Lesson

Better Lesson: Gcf and Lcm Project, Day 1

For Teachers 6th Standards
Sixth graders collaborate on a greatest common factor and least common multiple project.
Handout
Khan Academy

Khan Academy: Factors and Multiples Review

For Students 4th
Reviews what factors and multiples are and provides some problems for practice. Solutions are accompanied by explanations.
eBook
Mathigon

Mathigon: Math Foundations: Divisibility and Primes: Factors and Multiples

For Students 6th - 8th
This lesson focuses on factors and multiples; it explains each and provides practice activities and a quiz.
Activity
Cool Math

Coolmath: Gcf's and Lcm's Common Multiples

For Students 5th - 8th Standards
These prealgebra-arithmetic lessons explain greatest common factors (GCF's) and least common multiples (LCM's) and show how to find them.
Unit Plan
Khan Academy

Khan Academy: Factor Pairs

For Students 3rd - 5th Standards
Practice finding factor pairs for whole numbers. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Lesson Plan
Better Lesson

Better Lesson: Factors & Multiples

For Teachers 6th
Sixth graders will be able to understand the difference between a factor and a multiple.
Handout
Cuemath

Cuemath: Highest Common Factor

For Students 9th - 10th Standards
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...
Unit Plan
Khan Academy

Khan Academy: Factor With the Distributive Property

For Students 5th - 7th
Practice applying the distributive property to factor numerical expressions (no variables). Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Article
Cuemath

Cuemath: Least Common Multiple

For Students 5th - 8th Standards
Learn about the properties of Least Common Multiples (LCM) and the three methods to find the LCM. Included are solved examples and interactive problems for review.
Activity
Other

Help With Fractions: Finding the Least Common Multiple

For Students 3rd - 8th Standards
This website gives an excellent explanation of how to find the least common multiple. It offers two different methods and gives easy to follow step by step directions.
Unit Plan
Scholastic

Scholastic: Study Jams! Math: Multiplication and Division: Multiples

For Students 3rd - 6th
This site provides great practice on the concept of multiples. Students can first learn about the topic by watching a step by step instruction video that also points out areas of concern. Finally, students can practice their knowledge by...
Lesson Plan
George Mason University

Margo Mankus: Investigating Lcm and Gcf Using Rods

For Teachers 9th - 10th Standards
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.

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