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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
Khan Academy

Khan Academy: Identify Prime Numbers

For Students 3rd - 5th Standards
Identify prime 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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Handout
National Council of Teachers of Mathematics

The Math Forum: Prime Numbers

For Students 9th - 10th Standards
Explains what Prime Numbers are and how to find them. Includes a list of primes under 200 and discusses the Sieve of Eratosthenes. This site has numerous links to other internet sources regarding prime numbers.
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eBook
Mathigon

Mathigon: Math Foundations: Divisibility and Primes: Prime Numbers

For Students 6th - 8th
This lesson focuses on prime numbers, numbers that can only be divided by one and itself. It explains the Fundamental Theorem of Arithmetic and the Sieve of Eratosthenes. Includes practice activities.
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Handout
Math Medics

S.o.s. Math: The First 1000 Prime Numbers

For Students 9th - 10th
A list of the first 1000 prime numbers.
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eBook
Mathigon

Mathigon: Math Foundations: Divisibility and Primes: The Distribution of Primes

For Students 6th - 8th
This lesson focuses on the distribution of large prime numbers. It offers a calculator to check numbers for prime and a calculator that allows you to create prime numbers. It also provides the history of methods find the distribution of...
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Interactive
ABCya

Ab Cya: Prime Numbers

For Students 3rd - 6th Standards
Number Ninja: Prime Numbers is a fast-action way to practice factors. Act quickly and use your finger or mouse to slice numbers and reduce them to their prime factors. Do not slice a prime number!
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Handout
University of St. Andrews (UK)

University of St. Andrews: Prime Numbers

For Students 9th - 10th
Learn the history and mathematicians behind the study of prime numbers.
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Activity
Texas Instruments

Texas Instruments: Prime Numbers Time Line

For Teachers 9th - 10th
A number line showing prime numbers less than 100.
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Activity
University of Utah

University of Utah: Prime Numbers

For Students 9th - 10th
A discussion of Eratosthenes' development of the system of prime numbers. Includes a Java program that demonstrates the sieve.
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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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eBook
Math Planet

Math Planet: Factorization and Prime Numbers

For Students 6th - 8th
Gain an understanding of how to factor prime numbers by viewing examples and a video lesson.
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Interactive
Mangahigh

Mangahigh: Number: Prime Numbers

For Students 5th - 7th
Explore factors and multiples to determine prime numbers.
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Interactive
Cool Math

Coolmath: Coolmath4kids: Math Ficher Prime Numbers

For Students 2nd - 4th Standards
Hop into your boat and go fishing for the prime numbers between 1 and 100!
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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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Interactive
Calculator Soup

Calculator Soup: 1000 Prime Numbers

For Students 9th - 10th
The prime numbers table lists the first 1000 prime numbers from 2 to 8011. There are 1,009 total prime numbers in the lookup table.
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Handout
National Council of Teachers of Mathematics

The Math Forum: How Do You Find Prime Numbers?

For Students 9th - 10th Standards
This site explains prime number theory and how to find prime numbers.
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Website
Ducksters

Ducksters: Kids Math: Prime Numbers

For Students 9th - 10th
Math prime numbers for kids to learn about these unique digits.
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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
Other

University of Tennessee: The Prime Pages

For Students 9th - 10th Standards
Here you can find a detailed searchable database of the 5000 largest known primes! Content also includes a glossary, a top 10 records list, prime-music, programs, free downloads, and much more!
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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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