Seeing Squares for Two
Age 5 to 11
Challenge Level
Seeing Squares game for an adult and child. Can you come up with a way of always winning this game?
Which Scripts?
Age 7 to 11
Challenge Level
There are six numbers written in five different scripts. Can you sort out which is which?
Calendar Sorting
Age 7 to 11
Challenge Level
The pages of my calendar have got mixed up. Can you sort them out?
Train Tactics for Two
Age 7 to 11
Challenge Level
Train game for an adult and child. Who will be the first to make the train?
Coded Hundred Square
Age 7 to 11
Challenge Level
This 100 square jigsaw is written in code. It starts with 1 and ends with 100. Can you build it up?
Ducking and Dividing
Age 7 to 11
Challenge Level
Your vessel, the Starship Diophantus, has become damaged in deep space. Can you use your knowledge of times tables and some lightning reflexes to survive?
Factors and Multiples Game for Two
Age 7 to 14
Challenge Level
Factors and Multiples game for an adult and child. How can you make sure you win this game?
Countdown
Age 7 to 14
Challenge Level
Here is a chance to play a version of the classic Countdown Game.
Treasure Hunt
Age 7 to 14
Challenge Level
Can you find a reliable strategy for choosing coordinates that will locate the treasure in the minimum number of guesses?
Missing Multipliers
Age 7 to 14
Challenge Level
What is the smallest number of answers you need to reveal in order to work out the missing headers?
The Number Jumbler
Age 7 to 14
Challenge Level
The Number Jumbler can always work out your chosen symbol. Can you work out how?
Rod Fractions
Age 7 to 14
Challenge Level
Pick two rods of different colours. Given an unlimited supply of rods of each of the two colours, how can we work out what fraction the shorter rod is of the longer one?
Got It for Two
Age 7 to 14
Challenge Level
Got It game for an adult and child. How can you play so that you know you will always win?
Factor Lines
Age 7 to 14
Challenge Level
Arrange the four number cards on the grid, according to the rules, to make a diagonal, vertical or horizontal line.
Number Lines in Disguise
Age 7 to 14
Challenge Level
Some of the numbers have fallen off Becky's number line. Can you figure out what they were?
NRICH is part of the family of activities in the Millennium Mathematics Project.