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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

My Test Book: Multiples and Prime Factorization

For Students 5th - 7th
In this math skills activity, students solve 10 multiple choice math problems regarding prime factorization and multiples. Students may view the correct answers.
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Worksheet
Curated OER

My Test Book: Rational and Irrational Numbers

For Students 6th - 8th
In this online interactive math skills worksheet, middle schoolers solve 10 multiple choice math problems regarding rational and irrational numbers. Students may submit their answers to be scored.
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Worksheet
Curated OER

Factors and Greatest Common Factor

For Students 9th
In this factors activity, 9th graders solve and complete 39 different problems that include determining the greatest common factor to solve. First, they state whether each number is prime or composite. Then, students factors each...
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Worksheet
1
1
K12 Reader

Eratosthenes: Geographer and Mathematician

For Students 4th - 5th Standards
Mathematicians can be famous, too! Introduce your class to Eratosthenes with a reading passage. After they complete the passage, learners respond to five questions, some of which require opinions and others reading comprehension skills.
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Printables
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Houghton Mifflin Harcourt

Unit 4 Math Vocabulary Cards (Grade 5)

For Students 5th Standards
Common denominators, factors, and rounding are a few of the terms in a set of flash cards designed to reinforce math vocabulary. Forty-two cards offer a bold-faced vocabulary word or a corresponding definition alongside an example with...
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Lesson Plan
Curated OER

Applying Prime Factorization

For Teachers 6th
Sixth graders use the prime factorization of numbers to find the greatest common factor and least common multiple. Working in small groups, they solve problems using the greatest common factor and least common multiple.
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Worksheet
Curated OER

Number Theory Worksheet 2: The Sieve of Eratosthenes

For Students 5th - 6th
In this primes and multiples activity, students follow the directions to circle primes and multiples on a hundred chart until all prime numbers from 1 to 100 are circled. This is called the Sieve of Eratosthenes.
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Worksheet
Curated OER

Number Theory Worksheet 2: The Sieve of Eratosthenes

For Students 4th - 6th
in this number theory worksheet, students use the Sieve of Eratosthenes to find all primes up to the number 100. Students follow the directions to circle primes and multiples on the hundred chart.
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Lesson Plan
Curated OER

Patterns

For Teachers 9th
In this Algebra I worksheet, 9th graders explore number and geometric patterns and use the Sieve of Eratosthenes to find the prime numbers less than one hundred.  The six page worksheet contains eight multipart questions.  Answers are...
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Worksheet
Curated OER

Eratosthenes Sieve¦

For Students 6th - 8th
In this math worksheet, learners find the prime numbers through going through the factors in sequential order. The answers are used to create the words at the bottom of the page.
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Lesson Plan
EngageNY

Mental Math

For Students 10th - 12th Standards
Faster than a speedy calculator! Show your classes how to use polynomial identities to multiply numbers quickly using mental math. 
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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 instructional activity begins with the teacher and class playing the Factor Game together as students figure out the rules and uncover key...
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Activity
Curated OER

K-5 Mathematics Module: Number and Number Sense

For Students K - 5th Standards
Reinforce number sense with a collection of math lessons for kindergarteners through fifth graders. Young mathematicians take part in hands-on activities, learning games, and complete skills-based worksheets to enhance proficiency in...
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Lesson Plan
Curated OER

Greatest Common Factor: Using the Factor Tree

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

Factors Game

For Students 6th - 8th
In this factors game activity, teams of students identify factors.  They find proper factors of a given number  This one-page activity cotnains approximately 40 problems.
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Lesson Plan
Curated OER

Pascal's Triangle

For Teachers 7th - 11th
Students explore the concept of Pascal's Triangle. For this Pascal's Triangle lesson, students use an applet called 'Coloring Multiples' to explore Pascal's Triangle. Students develop patterns starting with various numbers in Pascal's...
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Worksheet
Curated OER

Greatest Common Factor #2

For Students 4th - 5th
For this GCF worksheet, students fill in missing number in factor trees, then determine whether numbers are prime or composite. Worksheet includes links to answers and additional worksheets.
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Lesson Plan
Curated OER

Divisibility Rules

For Teachers 8th
Eighth graders explore Excel and discover rules of divisibility for the numbers 2, 3, 4, 5, 6, 9, and 10; students examine multiples of 2 using pencil/ paper, then create a chart in Excel that will allow them to more easily see patterns...
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Lesson Plan
Curated OER

Super Factors

For Teachers 5th - 8th
Learners 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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Lesson Plan
Curated OER

One Hundred Hungry Ants (Multiplication and Division)

For Teachers 4th
Fourth graders explore factors of numbers from 1 to 50. They gain practice with basic facts and multi-digit multiplication problems. Students practice the commutative property. They discover the link between multiplication and...
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Lesson Plan
Curated OER

Factoring

For Teachers 9th
Ninth graders factor equations and find prime numbers. In this algebra lesson, 9th graders find the factors and prime factors of a number using multiples and relatively prime numbers.
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Worksheet
Curated OER

Number Theory: The Sieve of Eratosthenes

For Students 4th - 6th
In this number theory activity, students read about The Sieve of Eratosthenes and follow a set of directions to complete a prime number activity and answer 4 related questions.
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Lesson Plan
Curated OER

And the Number Is (Second Grade)

For Teachers 2nd
Second graders create Mystery Numbers. They give the class clues about the name, value, and multiples of the digits which make up the number.

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