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Lesson Plan
Curated OER

Prime Time

For Teachers 7th
Seventh graders practice determining the prime factorization of composite numbers. They create Christmas factor trees for prime numbers greater than 100. They decorate their final products with markers, crayons, colored pencils, glitter...
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Lesson Plan
Curated OER

What Are You - Prime or Composite

For Teachers 8th - 10th
Students explore the concept of prime factorization. For this prime factorization lesson, students participate in an activity where they find the prime factorization and greatest common factor of a number derived from their name....
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Lesson Plan
Curated OER

Greatest Common Factor: Using the Factor Tree

For Teachers 9th - 10th
Students find the greatest common factor of two numbers. In this algebra lesson, students use prime factorization to find their factor to simplify equations. they create a factor tree to find the factors of composite numbers.
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Worksheet
Curated OER

Greatest Common Factor: Reteach

For Students 5th - 6th
In this greatest common factor learning exercise, students review the different ways to find the greatest common factor for numbers including listing all the factors and finding prime factorization with factor trees. Students then list...
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Lesson Plan
Curated OER

Factor Trees

For Teachers 3rd - 5th
Students practice factor trees. They use Paint in Microsoft Word to create factor trees. After completion, they use a calculator to check their answers. In addition, they visit websites to reinforce the information.
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Lesson Plan
Curated OER

The Generation of Fractions

For Teachers 4th - 5th
Pupils explore the process of reducing fractions to simplest form by using a multiples grid. In this simplest form lesson, students pull different fractions out of a bag and then consult their grid to discover all the multiples that...
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Lesson Plan
Curated OER

Super Factors

For Teachers 5th - 8th
Pupils complete activity pages. In this factors lesson, students practice finding the factors of numbers. They discuss prime factors and prime factorization and learn how to complete a factor tree.
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Worksheet
Curated OER

Missing Numbers - Multiplication Virtual Worksheet

For Students 3rd - 4th
For this multiplication worksheet, students complete 72 vertical problems in which they find the second factor using the product and one factor. They can complete the worksheets online or print them out.
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Worksheet
Curated OER

Unit 2: Factors

For Students 6th - 9th
In this factors worksheet, students identify prime numbers.  They use a Sieve of Eratosthenes to identify prime numbers.  Students complete factor trees and explore perfect numbers.  This factoring unit contains eight pages.  Each page...
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Lesson Plan
Curated OER

Introducing the Concept Prime Factors

For Teachers 5th
Fifth graders identify the prime factorization for 48 using different sets of factors. They find the prime factorization for 60.
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Worksheet
Curated OER

Greatest Common Factor

For Students 4th - 5th
In this GCF instructional activity, learners fill in missing numbers in factor trees and write the prime factorization to find the greatest common factor. Worksheet includes links to answers and additional worksheets.
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Worksheet
Curated OER

Factors Worksheet

For Students 3rd - 5th
In this listing factors learning exercise, students examine 30 math problems that require them to list the factors of 1-digit and 2-digit numbers.
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Lesson Plan
Curated OER

Introductory Algebra Chapter R Review

For Teachers 6th - 8th
In this math worksheet, students solve the problems and simplify the fractions. Each of the sets is related to the instructional objectives.
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Lesson Plan
Curated OER

Factoring Large Numbers

For Teachers 7th
Seventh graders practice applying the rules of divisibility.
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Lesson Plan
Curated OER

Factorizations

For Teachers 6th - 8th
In this math worksheet, students find the answers for finding the factors for each whole number. They could use factor trees to find the solutions.
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Worksheet
Curated OER

Finding Prime Factors

For Students 6th
In this finding prime factors worksheet, 6th graders read two strategies for finding prime factors, then practice using these methods by doing factor facts drills.