Seventh graders determine if a number is prime or composite.  In this determining if a number is prime or composite activity, 7th graders use a website to help find all prime numbers between 1 and 100.  Students use a website to find divisibility rules for the numbers 2 - 10 except 7 and 8.  Students use a website to find all prime numbers between a given interval.

Concepts

composite numbers, prime numbers

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Additional Tags

composite, composite numbers, prime, prime numbers, math

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Classroom Considerations

• This resource is only available on an unencrypted HTTP website.It should be fine for general use, but don’t use it to share any personally identifiable information