Amy has a box containing domino pieces but she does not think it is a complete set. She has 24 dominoes in her box and there are 125 spots on them altogether. Which of her domino pieces are missing?

Try grouping the dominoes in the ways described. Are there any left over each time? Can you explain why?

Can you arrange fifteen dominoes so that all the touching domino pieces add to 6 and the ends join up? Can you make all the joins add to 7?

Guess the Dominoes for child and adult. Work out which domino your partner has chosen by asking good questions.

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

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

Can you work out the domino pieces which would go in the middle in each case to complete the pattern of these eight sets of 3 dominoes?

This task depends on learners sharing reasoning, listening to opinions, reflecting and pulling ideas together.

Can you make a rectangle with just 2 dominoes? What about 3, 4, 5, 6, 7...?

An ordinary set of dominoes can be laid out as a 7 by 4 magic rectangle in which all the spots in all the columns add to 24, while those in the rows add to 42. Try it! Now try the magic square...

Everthing you have always wanted to do with dominoes! Some of these games are good for practising your mental calculation skills, and some are good for your reasoning skills.

These interactive dominoes can be dragged around the screen.

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

This article takes a closer look at some of the toys and games that can enhance a child's mathematical learning.