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University of Waterloo (Canada)
Wired Math: Primes and Prime Factors [Pdf]
Explore primes, prime factors, and composites using this collection of worksheets. Lots of detailed examples, interesting math facts, and colorful visuals. Acrobat Reader required.
Khan Academy
Khan Academy: Identify Composite Numbers
Identify composite numbers less than 100. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Math Open Reference
Math Open Reference: Number
Resource defines numbers into two main categories, counting numbers and scalars. It also gives examples of number notation.
Alabama Learning Exchange
Alex: Exploring Prime Numbers
Exploring Prime Numbers is a hands-on, minds-on math lesson that engages learners in the discovery of prime numbers through the construction of multiplication arrays. Students then extend on their background knowledge of multiples and...
Alabama Learning Exchange
Alex: My Favorite Number
The activity allows students to review many of the number theory concepts. Students will pick a composite number write verbal expressions about the number, find the factors, prime factorization, list multiples, draw a cartoon character...
Alabama Learning Exchange
Alex: Hanging Out With Prime Factorization
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...
ABCya
Ab Cya: Adventure Man Dungeon Dash Numbers
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...
Math Open Reference
Math Open Reference: Prime Number
Learn about prime numbers with this handy reference guide. Provides a detailed definition and examples that enhance further explanation. Includes links to related topics.
Cuemath
Cuemath: Composite Numbers
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.
Cool Math
Coolmath: Pre Algebra Prime and Composite Numbers
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.
E-learning for Kids
E Learning for Kids: Math: Amazon River Boat Trip: Multiplication and Division
Explore prime and composite numbers, multiplication, and division with Julie throughout these interactive exercises.
E-learning for Kids
E Learning for Kids: Math: Ice Cream Shop: Numbers to 100,000,000
On this interactive site students learn to read and write large numbers in numerals, round numbers to millions, and locate prime and composite numbers.
E-learning for Kids
E Learning for Kids: Math: Penguins: Factors and Multiples
On this interactive site students practice various skills including square numbers, multiples, factors, composite numbers, and mixed numbers.
SMART Technologies
Smart: Factors and Multiples
Students are introduced to prime numbers, composite numbers, prime factorization, greatest common factor, and least common multiple in this SMART whiteboard activity.
Wyzant
Wyzant: Prime Factors Calculator
Students input a number to be factored and the WyzAnt calculator does the rest. Limitations include the fact that numbers which are negative or which contain primes bigger than 541 cannot be handled.
ClassFlow
Class Flow: Working With Prime and Composite Numbers
[Free Registration/Login Required] This flipchart allows students to practice working with prime and composite numbers. Students learn how to do prime factorization.
ClassFlow
Class Flow: Factoring, Prime and Composite
[Free Registration/Login Required] This flipchart defines factors, prime number, and composite numbers. It gives step-by-step instructions on how to list all the factors of a whole number and then identify the number as a prime number or...
Calculator Soup
Calculator Soup: Prime Number Calculator
This prime number calculator will find if a number is prime or composite. If it is composite the calculator will also find all of the factors of the composite number.
Quia
Ixl Learning: Prime and Composite Numbers
Brush up on your math skills relating to prime and composite numbers then try some practice problems to test your understanding.
Mocomi & Anibrain Digital Technologies
Mocomi: What Is a Prime Number?
Explains prime numbers and gives examples.