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Unknown Type
Wired Math: Primes and Prime Factors [Pdf] 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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Unit Plan
Homeschool Math: Prime Factorization 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.
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Unit Plan
Pbs: Greatest Common Factor Unit Plan
PBS

Pbs: Greatest Common Factor

For Students 6th - 8th Standards
In this video, learn how to find the greatest common factor of two numbers. Then, see how this can be used to solve problems with large numbers. In the accompanying classroom activity, students learn to find prime factors using factor...
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Unit Plan
Homeschool Math: Prime Factorization of Three Digit Numbers Unit Plan
Homeschool Math

Homeschool Math: Prime Factorization of Three Digit Numbers

For Teachers 5th
This lesson shows examples of how to get started with the prime factorization of three-digit or larger numbers, using a factor tree. includes numerous practice exercises.
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Handout
Ixl Learning: Prime Factorization 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.
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