Checking understanding of prime numbers

I can state the properties of a prime number and can identify prime numbers.

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Year 7

Checking understanding of prime numbers

I can state the properties of a prime number and can identify prime numbers.

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Share activities with pupils

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Lesson details

Key learning points

Prime numbers all share the same properties.
Prime numbers can be identified using factors.
Prime numbers can be identified using multiples.
The Sieve of Eratosthenes is an efficient method for finding primes.

Keywords

Prime - A prime number is an integer greater than one with exactly two factors.

Common misconception

1 is a prime number

1 is not a prime number as it only has one factor and a prime number has exactly two factors.

To bring prime numbers to life you could look at Eratosthenes in more detail. When you have been through the sieve of Eratosthenes challenge students to memorise them and then go around the class and recite them in order.

Teacher tip

Licence

This content is © Oak National Academy Limited (2024), licensed on Open Government Licence version 3.0 except where otherwise stated. See Oak's terms & conditions (Collection 2).