## Prime Labyrinth

Find the path to the centre of the labyrinth by moving along the prime numbers.

## Prime Pairs Game

A game for two players who take turns to select two numbers that add up to a prime number.

## Prime Square

Drag the numbers into the red cells so that the sum of the three numbers in each row and each column is a prime number.

## Can You Decide?

Recognise odd, even, square, prime and triangular numbers.

## What are they?

A starter about sums, products, differences, ratios, square and prime numbers.

## Dump-A-Dice Race

An online board game for two players involving prime and square numbers and making choices.

## Factor Trees

Create factor trees to find the prime factors of the given numbers.

## Satisfaction

This is quite a challenging number grouping puzzle requiring a knowledge of prime, square and triangular numbers.

## Scallywags and Scoundrels

Arrange the scallywags and scoundrels on the chairs so that the numbers of any two sitting next to each other add up to a prime number.

## Sieve of Eratosthenes

A self checking, interactive version of the Sieve of Eratosthenes method of finding prime numbers.

## National Curriculum Statement

Pupils should be taught to use the concepts and vocabulary of prime numbers, factors (or divisors), multiples, common factors, common multiples, highest common factor, lowest common multiple, prime factorisation, including using product notation and the unique factorisation property

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