Give the class a prime example of using prime numbers. After reviewing prime factorization of numbers with the video, pupils use their knowledge to determine greatest common factors and least common multiples in the worksheet. The resource is second in a larger series to provide learners with a review in preparation for the General Certificate of Secondary Education Math exam.

Concepts

least common multiple, greatest common factor, prime factors, prime numbers, composite numbers, exponents, factor trees

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Additional Tags

math

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Instructional Ideas

• Review divisibility rules with the class
• Conduct a mini-lesson on using prime factorization to find the GCF and LCM of two numbers

Classroom Considerations

• It is beneficial if class members know the first 10 prime numbers

Pros

• The video pauses to allow individuals to try an item before explaining it
• Includes worked-out solutions in the answer key

Cons

• The video does not cover GCF nor LCM

Common Core

SL.9-10.2 6.NS.B.4 MP2 MP6 MP7