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.
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.
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.
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.
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.
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.
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...
Unit Plan
Khan Academy

Khan Academy: Prime and Composite Numbers Intro

For Students 4th Standards
Discusses factors, prime and composite numbers, and why the number 1 is not prime or composite. Includes practice problems throughout, along with explanations of solutions.
Unit Plan
Goodwill

Gcf Global: Reciprocals and Inverse Numbers

For Students 9th - 10th
Read this tutorial to learn about reciprocal and inverse numbers and how they work.
Unit Plan
Shmoop University

Shmoop: Basic Operations: Lcm & Gcf

For Students 9th - 10th Standards
Students learn about the least common multiple and the greatest common factor. The resource consists of notes, step-by-step examples, and practice problems with solutions.
Article
Mocomi & Anibrain Digital Technologies

Mocomi: What Are Factors and Multiples?

For Students 2nd - 8th Standards
Explores factors and multiples and the difference between them.
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
E-learning for Kids

E Learning for Kids: Math: Penguins: Factors and Multiples

For Students 5th - 6th Standards
On this interactive site students practice various skills including square numbers, multiples, factors, composite numbers, and mixed numbers.
Interactive
AAA Math

Aaa Math: Least Common Multiple

For Students 3rd - 8th Standards
This tutorial offers an explanation of least common multiples, practice finding them and a game to play. There is a lot of information available at this location.
Activity
Discovery Education

Discovery Education: Web Math: Find the Least Common Multiple of Some Numbers

For Students 3rd - 8th Standards
Use this site to find the Least Common Multiple (LCM) of any set of numbers. Simply type in your numbers, and the site will provide the answer complete with a full explanation.
Interactive
Other

Everyday Math: Factor Bingo

For Students K - 1st
If you love playing Bingo, then you will enjoy this interactive game that focuses on factors and number concepts. Learners select the numbers for the bingo card then, try to find the factors that match. Audio is provided for game...
Unknown Type
University of Waterloo (Canada)

Wired Math: Primes and Prime Factors [Pdf]

For Students 3rd - 8th Standards
Explore primes, prime factors, and composites using this collection of worksheets. Lots of detailed examples, interesting math facts, and colorful visuals. Acrobat Reader required.
Lesson Plan
Illustrative Mathematics

Illustrative Mathematics: Picturing Factors in Different Orders

For Teachers 5th - 8th
The purpose of this task is to help learners picture the multiplicative structure of the number 30 in different ways. Some of this structure is easier to communicate using grouping symbols, as it is easier to interpret...

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