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Lesson Plan
Curated OER

Turkey Feathers

For Teachers Pre-K - K
Students demonstrate counting skills. In this number sense lesson, students glue numbered feathers onto a turkey pattern in numerical order.
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Handout
Other

Help With Fractions: Prime Numbers Chart

For Students 9th - 10th Standards
Prime and composite numbers are defined on this website. A prime number chart is also included for all prime numbers under 10,000.
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Article
Cuemath

Cuemath: Prime Numbers

For Students 4th - 8th Standards
Learn about the history of prime numbers, properties of prime numbers, and easy methods to find prime numbers. Included are solved examples and interactive problems for review.
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Unit Plan
Scholastic

Scholastic: Study Jams! Math: Multiplication & Division: Prime Numbers

For Students 4th - 7th Standards
This site provides great practice on the concept of prime and composite numbers. 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...
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Handout
Varsity Tutors

Varsity Tutors: Hotmath: Algebra Review: The Prime Page

For Students 9th - 10th Standards
Find a quick, concise but complete explanation of prime numbers. A variety of related topics are covered such as: A table of the first 400 Prime Numbers, Do Primes ever stop?, the Prime Number Theorem and Twin Primes.
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Graphic
Cool Math

Coolmath: Pre Algebra Prime and Composite Numbers

For Students 9th - 10th
Students can learn the definitions of "prime numbers" and "composite numbers" with this resource. Several pages are provided that show students how to break down composite numbers until only prime numbers are left.
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Handout
Wolfram Research

Wolfram Math World: Prime Number

For Students 9th - 10th Standards
Prime Numbers are defined with a glossary hyperlink to terms used in the definition. Lots of information and examples included. Lists many math-related links. Scroll down to the bottom of the page to see how prime numbers are used in the...
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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.
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Lesson Plan
Alabama Learning Exchange

Alex: Exploring Prime Numbers

For Teachers 3rd - 5th Standards
Exploring Prime Numbers is a hands-on, minds-on math lesson that engages students in the discovery of prime numbers through the construction of multiplication arrays. Students then extend on their background knowledge of multiples and...
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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.
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Handout
Varsity Tutors

Varsity Tutors: Hotmath: Algebra Review: Composite Numbers

For Students 3rd - 8th Standards
Find a quick, concise explanation of Composite Numbers. Several examples are given and clearly explained. Prime numbers are also described.
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Handout
Math Open Reference

Math Open Reference: Prime Number

For Students 9th - 10th
Learn about prime numbers with this handy reference guide. Provides a detailed definition and examples that enhance further explanation. Includes links to related topics.
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Article
Cuemath

Cuemath: Composite Numbers

For Students 6th - 8th
In this article, you will learn the difference between prime and composite numbers, the smallest composite number, and odd composite numbers. Included are solved examples and interactive problems for review.
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Unknown Type
McGraw Hill

Glencoe: Self Check Quizzes 1 Prime Factors

For Students 9th - 10th Standards
Use Glencoe's randomly generated self-checking quiz to test your knowledge of prime factors. Each question has a "Hint" link to help. Choose the correct answer for each problem. At the bottom of the page click the "Check It" button and...
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Unit Plan
Khan Academy

Khan Academy: Identify Composite Numbers

For Students 3rd - 5th Standards
Identify composite numbers less than 100. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
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Unit Plan
CK-12 Foundation

Ck 12: Elem Math: Identifying Prime or Composite Numbers

For Students 3rd - 5th Standards
[Free Registration/Login may be required to access all resource tools.] For this learning module, students are asked to identify prime and composite numbers. Includes video demonstrating a sample problem [1:30] and a set of practice...
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Unit Plan
CK-12 Foundation

Ck 12: Arithmetic: Prime and Composite Numbers

For Students 6th
[Free Registration/Login may be required to access all resource tools.] Identify and classify numbers as either prime or composite.
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Activity
Amby Duncan-Carr

Prime Factorization: Amby's Resources

For Students 6th - 8th
What is prime factorization? This site goes through a step-by step process explaining different ways to find the prime factorization.
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Article
Mocomi & Anibrain Digital Technologies

Mocomi: What Is a Prime Number?

For Students 1st - 8th Standards
Explains prime numbers and gives examples.
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Activity
AAA Math

Aaa Math: Prime and Composite Numbers

For Students 3rd - 8th Standards
This math tutorial offers an explanation of prime and composite numbers and lets students practice finding them.
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Lesson Plan
Alabama Learning Exchange

Alex: Hanging Out With Prime Factorization

For Teachers 3rd - 8th Standards
During this lesson, students will review factors, prime and composite numbers. Students will also create a mobile that show the prime factorization of the number of their choice. This lesson plan was created as a result of the Girls...
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Interactive
ABCya

Ab Cya: Adventure Man Dungeon Dash Numbers

For Students 1st - 5th
Adventure Man is back once again, but this time with the help of fearless friend Danger Dame! Help them dash their way through the Numbers Dungeon while collecting gold, gems, and answering questions about odd, even, prime, and composite...
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Unit Plan
E-learning for Kids

E Learning for Kids: Math: Ice Cream Shop: Numbers to 100,000,000

For Students 5th - 6th Standards
On this interactive site students learn to read and write large numbers in numerals, round numbers to millions, and locate prime and composite numbers.
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Activity
Other

Eratosthenes' Prime Number Sieve

For Students 3rd - 8th Standards
Discover all the primes up to the number 400 by using this interactive table. Simply click on a number and its multiples disappear.

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