article
Divisibility tests
This article explains various divisibility rules and why they work. An article to read with pencil and paper handy.
Factors and multiples
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interactivityCuisenaire environment
Age5 to 16Challenge level
An environment which simulates working with Cuisenaire rods. -
gameFavouriteThe remainders game
Age7 to 14Challenge level
Play this game and see if you can figure out the computer's chosen number.
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gameFavouriteFactors and multiples game
Age7 to 16Challenge level
A game in which players take it in turns to choose a number. Can you block your opponent?
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gameDown to nothing
Age7 to 11Challenge level
A game for 2 or more people. Starting with 100, subratct a number from 1 to 9 from the total. You score for making an odd number, a number ending in 0 or a multiple of 6.
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gameOdds and threes
Age7 to 11Challenge level
A game for 2 people using a pack of cards Turn over 2 cards and try to make an odd number or a multiple of 3.
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problemRobotic rotations
Age11 to 16Challenge level
How did the the rotation robot make these patterns?
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problemSatisfying four statements
Age7 to 11Challenge level
Can you find any two-digit numbers that satisfy all of these statements?
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problemStatement snap
Age7 to 14Challenge level
You'll need to know your number properties to win a game of Statement Snap...
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problemSatisfying statements
Age11 to 14Challenge level
Can you find any two-digit numbers that satisfy all of these statements?