Skip over navigation
Cambridge University Faculty of Mathematics NRich logo
menu search
  • Teachers expand_more
    • Early years
    • Primary
    • Secondary
    • Post-16
    • Events
    • Professional development
  • Students expand_more
    • Primary
    • Secondary
    • Post-16
  • Parents expand_more
    • Early Years
    • Primary
    • Secondary
    • Post-16
  • Problem-Solving Schools
  • About NRICH expand_more
    • About us
    • Impact stories
    • Support us
    • Our funders
    • Contact us
  • search

Or search by topic

Number and algebra

  • The Number System and Place Value
  • Calculations and Numerical Methods
  • Fractions, Decimals, Percentages, Ratio and Proportion
  • Properties of Numbers
  • Patterns, Sequences and Structure
  • Algebraic expressions, equations and formulae
  • Coordinates, Functions and Graphs

Geometry and measure

  • Angles, Polygons, and Geometrical Proof
  • 3D Geometry, Shape and Space
  • Measuring and calculating with units
  • Transformations and constructions
  • Pythagoras and Trigonometry
  • Vectors and Matrices

Probability and statistics

  • Handling, Processing and Representing Data
  • Probability

Working mathematically

  • Thinking mathematically
  • Developing positive attitudes
  • Cross-curricular contexts

Advanced mathematics

  • Decision Mathematics and Combinatorics
  • Advanced Probability and Statistics
  • Mechanics
  • Calculus

For younger learners

  • Early Years Foundation Stage

Shut the Box for Two

Age 5 to 7
Challenge Level Yellow star
  • Game


Here's a game to play with an adult!


How do you play?
You will need an adult to play with.
You will also need two dice (you could use our interactive dice) and cards with the numbers 1 to 12 on them, which you can print off from here. 

The aim of the game is to turn over all the cards. You can turn over the cards that match the numbers on the dice.

To play the game, start with the numbers showing on all the cards. The adult rolls the two dice first. They can turn over the cards which are the same as the numbers rolled. For example, if a 4 and a 5 are rolled, they would turn over the 4 and 5 cards. If a double is thrown, their turn ends. They can roll the dice again until they can't turn over any more cards. The cards that are left showing are then added and that is their score.

You then take the dice and turn the cards the right way up again, and then roll the dice in the same way as the adult. You can keep on rolling dice as long as each time you can turn over some new cards. Remember that if a double is thrown, your turn ends. When you can't turn over any more cards, those that are left are added together and that is your score.

The winner is the person with the lower score. It can be played with just one turn each or each player can have a number of turns that you decide at the beginning of the game.

Can you explain your strategy?
What is good about the game? What is not so good? Why?
How could you alter the rules to make it better?

Notes for adults
This game can give children the opportunity to use their number knowledge. Altering the rules will give the children opportunities to explore ideas about what makes a "good" game and to develop winning strategies to play their games.

Easier version: try starting with just the numbers 1 to 6.
Harder version: try inventing new rules, or adding, subtracting or multiplying the scores on the two dice together to find the number to turn over. You could also change the rule which ends the turn when a double is thrown.

There's a classroom version of this game here.

You may also like

Homes

Six new homes are being built! They can be detached, semi-detached or terraced houses. How many different combinations of these can you find?

Number Squares

Start with four numbers at the corners of a square and put the total of two corners in the middle of that side. Keep going... Can you estimate what the size of the last four numbers will be?

I'm Eight

Find a great variety of ways of asking questions which make 8.

  • Tech help
  • Accessibility Statement
  • Sign up to our newsletter
  • Twitter X logo

The NRICH Project aims to enrich the mathematical experiences of all learners. To support this aim, members of the NRICH team work in a wide range of capacities, including providing professional development for teachers wishing to embed rich mathematical tasks into everyday classroom practice.

NRICH is part of the family of activities in the Millennium Mathematics Project.

University of Cambridge logo NRICH logo