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...
Handout
Quia

Ixl Learning: Prime Factorization

For Students 5th - 6th
Brush up on your math skills relating to prime factorization then try some practice problems to test your understanding.
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.
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.
Website
DOGO Media

Dogo News: Week of 2 11 13: Mathematician Unveils World's Biggest Prime Number

For Students 9th - 10th
Learn about the recent discovery of the longest known prime number, which is 17, 425,170 digits long.
Unknown Type
McGraw Hill

Glencoe: Self Check Quizzes 2 Prime Factorization

For Students 6th - 8th
Use Glencoe's Math Course 2 randomly generated self-checking quiz to test your knowledge of prime factorization. Each question has a "Hint" link to help. Choose the correct answer for each problem. At the bottom of the page click the...
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.
Handout
Wolfram Research

Wolfram Mathworld: Prime Factorization

For Students 9th - 10th
This site gives a wonderful explanation of prime factorization including a very helpful table in understanding prime decomposition. Look further down the page to get information on Gaussian primes.
Article
Mocomi & Anibrain Digital Technologies

Mocomi: What Is a Prime Number?

For Students 1st - 8th Standards
Explains prime numbers and gives examples.
Unit Plan
Homeschool Math

Homeschool Math: Prime Factorization

For Teachers 3rd - 8th Standards
This site contains a free lesson on Prime Factorization in which students learn by doing practice problems.
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...
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.
Activity
Texas Instruments

Texas Instruments: Numb3 Rs: Prime Time

For Teachers 9th - 10th
Based off of the hit television show NUMB3RS, this lesson helps students understand the Goldbach Conjecture (any even number greater than four can be written as the sum of two odd prime integers). Students explore how many pairs of odd...
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.
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...
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.
Interactive
Mangahigh

Mangahigh: Number: Prime Factoring

For Students 5th - 8th
Explore prime factors and what the missing exponent could be.
Activity
Math Is Fun

Math Is Fun: Prime Factorization

For Students 3rd - 8th Standards
Find a definition or prime numbers and prime factorization, as well as examples on how to find the prime factors of 12 and 147. Also, follow a link to a Prime Factorization Tool.
Activity
University of Cambridge

University of Cambridge: Nrich: Penta Primes

For Students 3rd - 8th Standards
Using only the single digits listed make as many prime numbers as you can for this challenge. After you have your list you can check this one page website and it will show you the solution.
Handout
University of Cambridge

University of Cambridge: Nrich: Irrational Proof

For Students 9th - 10th Standards
This site contains a proof that the square roots of all prime numbers are irrational.
Unit Plan
Scholastic

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

For Students 4th - 7th Standards
This site provides great practice on the concept of prime factorization. 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 their...
Unit Plan
CK-12 Foundation

Ck 12: Elem Math: Prime Factorization

For Students 3rd - 5th Standards
[Free Registration/Login may be required to access all resource tools.] Students watch a video and attempt practice problems about prime factorization.
Activity
Ministry of Education and Universities of the Region of Murcia (Spain)

Ministerio De Educacion Y Ciencia: Numeros Primos

For Students 9th - 10th
This interactive unit explain what prime numbers are and how to find them. It also discuss the Sieve of Eratosthenes and the Mersenne number.
eBook
Mathigon

Mathigon: Algebra: Special Sequences

For Students 9th - 10th Standards
In addition to arithmetic and geometric sequences, Fibonacci Numbers, and figurate numbers, there are countless interesting sequences that don't follow a similar, regular pattern. These include prime numbers, perfect numbers, the...

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