article
Take a ... geoboard
This article for teachers explains why geoboards are such an invaluable resource and introduces several tasks which make use of them.
Search
problem
Favourite
Secret number
5 to 7
Annie and Ben are playing a game with a calculator. What was Annie's secret number?
problem
Four in a row
11 to 14
Where should black play in this game of four-in-a-row to be certain of winning on her next move?
problem
Arsenal collection: football logic
11 to 16
Can you use your powers of logic and deduction to work out the missing information in these situations?
problem
Favourite
Non-transitive dice
11 to 14
Alison and Charlie are playing a game. Charlie wants to go first so Alison lets him. Was that such a good idea?
problem
Probably...
7 to 11
You'll need to work in a group for this problem. The idea is to decide, as a group, whether you agree or disagree with each statement.
article
NRICHing mathematics in Haringey
This article for teachers describes a joint project in 2007/8 with Haringey Local Authority and NRICH to support improving using and applying mathematics, reasoning and creativity.
problem
Favourite
Snooker frames
16 to 18
It is believed that weaker snooker players have a better chance of winning matches over eleven frames (i.e. first to win 6 frames) than they do over fifteen frames. Is this true?
problem
Favourite
Classic problem - tower of Hanoi
14 to 16
The Tower of Hanoi is an ancient mathematical challenge.