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Interactive
Scholastic

Study Jams! Greatest Common Factor

For Students 5th - 8th Standards
When one method isn't enough to teach GCF, try two! This interactive webpage introduces factors and the prime factor tree to find the greatest common factor of two numbers. After the lesson, have learners click to try the two examples...
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Lesson Plan
Curated OER

Find the Factors and Prime Factors

For Teachers 4th - 6th
Show the class how to find the factors of numbers. They use a variety of strategies, including unifix cubes, to find the factors of a whole number. This resource includes clear procedure to follow. Included are an anticipatory set,...
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Worksheet
Curated OER

Number Sense and Numeration: Multiples, Factors and Square Roots

For Students 6th - 8th
A great resource for any math teacher covering multiples, factors or square roots; this learning exercise walks young mathematicians through the logic behind factoring and square roots with a systematic set of problems which gradually...
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Lesson Plan
Math Solutions

Factor Game

For Teachers 4th - 6th Standards
Learning about factors and multiples is all fun and games with this simple math activity. The lesson begins with the teacher and class playing the Factor Game together as students figure out the rules and uncover key vocabulary as they...
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Lesson Plan
EngageNY

Least Common Multiple and Greatest Common Factor

For Students 6th Standards
Find the common denominator between prime factors, factor trees, and the distributive property. Scholars learn to find the least common multiple and greatest common factor of pairs of numbers. They rotate through stations to connect...
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Lesson Plan
Curated OER

Factor Trees

For Teachers 4th - 7th
In this factor trees worksheet, young scholars make factor trees for 2 through 4 digit numbers. Students complete 20 factor trees for these numbers.
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Worksheet
Curated OER

Split a Factor

For Students 2nd - 4th
Take the mystery out of multiplicaton with worksheets like this one. Learners find a mental math strategy for more difficult equations by splitting a factor, multiplying out the terms, and adding the products. An example explains this...
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Instructional Video3:31
Corbett Maths

Enlargements with Fractional Scale Factors

For Students 6th - 12th Standards
Enlargements make it bigger, right? A video shows viewers how to perform a basic dilation with a fractional scale factor. They learn how to use the scale factor to find the location of the transformed vertex by multiplying the horizontal...
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Interactive
CK-12 Foundation

Greatest Common Factor Using Lists

For Students 6th Standards
By creating a list of factors for two numbers, it is easier to see the greatest common factor. Each question in an interactive resource asks pupils to identify the greatest common factor for the numbers 24 and 36 in several different...
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App
Third Rail Games

Factor Samurai

For Students 3rd - 5th Standards
Master composite and prime numbers with this fast-moving game. Using your sword, slice those composite numbers and watch them break up into factors. Slice again if those factors are composite. However, watch out for prime numbers,...
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Worksheet
Curated OER

Finding Factors

For Students 6th - 8th
In this finding factors worksheet, students practice finding all the factors of 24 in twenty word equations and then find the prime factorization in ten equations.
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Worksheet
Curated OER

Factors of Numbers from 1 to 30

For Students 3rd - 5th
Finding factors is an integral skill on the road to fractions and algebra. Scholars write down a factor list for nine numbers up to 30. Next, they examine provided lists and circle the numbers that are factors of eight more numbers, also...
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Worksheet
Curated OER

Factors of Numbers from 31 to 65

For Students 4th - 5th
Finding factors is an integral aspect of multiplication. Although there are two examples here, they don't illustrate the process so you will still need to model this a few times for scholars. First, mathematicians list the factors for...
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Worksheet
Curated OER

Greatest Common Factor

For Students 3rd - 5th
These multiples share a few factors, but which one is the greatest? Scholars list the factors for various number pairs, first just indicating common factors. Next, they do the same but write down the greatest common factor. Finally,...
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Worksheet
Curated OER

Case of the Stolen Factors

For Students 3rd - 5th
This identifying the missing factors in multiplication activity haspupils use the stolen factors clues to help solve and check the answers. They solve 20 problems.
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Worksheet
Curated OER

Factors of Numbers from 66 to 100

For Students 4th - 6th
Finding factors requires practice and a logical system, so help scholars develop this skill with these problems. They write out the factor list for 9 two-digit numbers and then circle the factors from a list for four more numbers....
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Worksheet
Curated OER

Using Factor Trees

For Students 5th - 6th
In this math worksheet, students read about how to create a factor tree. Students use factor trees to determine the prime factors of 16 numbers.
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Worksheet
Curated OER

Working With Common Factors and Common Multiples

For Students 5th - 6th
In this math worksheet, students learn to find common factors and common multiples for sets of numbers. First students circle the common factors they see in the examples given. Then students list the factors and multiples for each number...
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Lesson Plan
Curated OER

Smart Cookie Factors

For Teachers 4th - 5th
Learners examine the concept of finding the greatest common factor. They complete number of activities as they practice identifying prime and composite numbers. Pupils apply rules of divisibility and find the greatest common factor while...
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Worksheet
Curated OER

Factors

For Students 3rd - 5th
Factoring numbers helps prepare scholars for fractions and algebra, so build confidence by drilling this skill and promoting reflection in the process. Scholars start by listing factors for 18 numbers, none of which exceed 30. Next, they...
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Lesson Plan
Curated OER

Greatest Common Factor and Factoring by Grouping

For Teachers 11th - Higher Ed
In this Algebra II/college level worksheet, young scholars factor polynomials by pulling out the GCF and by grouping.  The two page worksheet contains seventy–two problems.  Answers are provided. 
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Lesson Plan
Curated OER

Prime Factorization: Finding Factors in the Fifth Grade

For Teachers 5th
The lesson starts out with a brain drain, which is a great way to get students to activate prior knowledge and build lasting connections. They tell everything they know about prime factorization, use their knowledge to...
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Assessment
Mathed Up!

Negative Scale Factor

For Students 9th - 12th
Class members investigate the effect of a negative scale factor dilation on coordinate shapes as they watch a short video that shows an example of a geometric figure undergoing a dilation with a negative scale factor. Learners then try a...
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Instructional Video5:11
Corbett Maths

Enlargements with Negative Scale Factor

For Students 6th - 12th Standards
How will a scale factor affect a figure—negatively? Using a grid, the narrator of an engaging video performs a dilation with a negative scale factor. The presenter compares a positive scale factor with a negative scale factor to explain...

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