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

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.

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

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

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.

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

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

FREE mathematical activities, puzzles, problems, visual aids, investigations and lots more.

Enter Transum Maths to see how teaching and learning this fascinating subject can be fun.

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Transum.org [also at Transum.info and Transum.com] developed as an eclectic mix of free webware featuring online activities to help you with Mathematics. You can read the latest Press Release or see the other parts of the site.

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