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

Guess the Dominoes for Two

Age 7 to 11
Challenge Level Yellow star
  • Problem


Here's a game to play with an adult!

 
How do you play? 
You'll need an adult to play with.
If you've got a set of dominoes, you can use those. If you haven't you could make a set (in colour or black and white). 
You'll also need a set of the rule cards and a piece of coloured paper to use as 'the Box'.
Give the rule cards to the adult and keep the dominoes yourself.

The adult looks at the rule cards and secretly chooses one.
Your job is to find out what it says on that rule card.

Choose one domino and give it to the adult.
Ask “Does this domino fit your rule?”
If the answer is 'yes' put the domino into the Box. If the answer is 'no' put it outside the Box.
Keep giving dominoes to the adult until you think you have worked out what it says on the rule card.
Say “Is your rule ...?”
If you're right, you could swap roles.
If you're wrong keep going!

What's the least number of dominoes you needed to offer?
 

Notes for adults
This game is all about making sensible guesses, or conjectures, and explaining your thinking. It is also about the language and concepts of number - depending on the age of the child this could range from simple number names (one, two, three) to number concepts (odd, even) through to quite advanced ideas (difference, multiple). It isn't a fast game but depends on bringing together lots of pieces of information to make deductions. 

Easier version: use a smaller set of dominoes (0-4 dots) and the simple rules which you can find here. Have all the rule cards on view and turn them over once they have been eliminated.

Harder version: use all the dominoes (you could even make a 0-9 set) and keep the rule cards hidden from view.

When you've completed a game, talk together about how the rule was found.
Repeat the game, aiming to reduce the number of dominoes offered.

There's a group version of this game here.

You may also like

Domino Square

Use the 'double-3 down' dominoes to make a square so that each side has eight dots.

4 Dom

Use these four dominoes to make a square that has the same number of dots on each side.

Eight Dominoes

Using the 8 dominoes make a square where each of the columns and rows adds up to 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