Lessons

In this lesson you will learn how to find the Greatest Common Factor of two or more numbers by creating and comparing a list of factors for each.

In this lesson you will learn how to find the Least Common Multiple of two or more numbers by creating and comparing a list of multiples for each.

In this lesson you will learn how to find the GCF and LCM of two whole numbers by using their prime factors.

In this lesson you will learn how to write an equivalent expression showing the GCF of two addends by using the Distributive Property.
Isolation Drills
Distributive property with variables
Factoring numerical expressions using the distributive property
Interactive Practice
 Area Models for Multiplication and Division – An Annenberg lesson plan from their Learning Math series
 Basic Number Properties: Associative, Commutative, and Distributive – Explanation from Purple Math
 Distributive Property – Short animation that loops
 Distributive Property – Five slide PowerPoint show which uses animation very effectively
 Factor Tree – Interactive game. Find the prime factorization of numbers by completing factor trees. Then use a venn diagram to sort the prime factors.
 Factoring Worksheets for Prime Factorization – Create an unlimited supply of free printable factoring worksheets here. The problem sheets are randomly generated so unique each time.
 Factorization Forest – A game in which students can practice their prime factorization skills.
 Finding Factors – List the factors for the given numbers, answers included on page two
 Finding Factors of a Number – Video lesson explaining the concept
 Interactive Factor Tree Game – Find all prime factors of a composite number with our Factor Tree. This interactive game requires Adobe Flash Player.
 Number Properties – From Online Math Learning
 Prime Factoring – Help Professor Super save the planet by cooking the Giant Frozen Rubber Turkeys of Destruction
 Prime Factorization – Video lesson explaining the concept
 Prime Factorization – Brain Pop video or quiz provided by Glencoe
 Prime Factorization – Explanation of two ways to do the factorization with examples, followed by seven practice exercises to check student understanding
 Prime Factorization – Explanation and examples; at the bottom of the page there are links to six practice questions to check student understanding
 Prime Factorization – Interactive practice (multiple choice quiz)
 Prime Factorization Calculator – Enter whatever number you want and then choose which operation you want the prime factorization calculator to perform.
 Prime Factorization Tool – This tool will work out the prime factorization of a number. The number should be a positive whole number.
 Prime Factorization: Prime Numbers – Enter a natural number to be factorized
 Prime Factors – Two part lesson plan; introducing the idea and developing the concept
 Recognizing Prime Numbers – Video lesson explaining the concept
 Use the distributive property to simplify numerical and variable expressions – An eleven slide PowerPoint show which use animation effectively to teach the concept
 Which Property – A quiz in the form of a PowerPoint show
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