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?
Use the 'double-3 down' dominoes to make a square so that each side has eight dots.
This task depends on learners sharing reasoning, listening to
opinions, reflecting and pulling ideas together.
Guess the Dominoes for child and adult. Work out which domino your partner has chosen by asking good questions.
Is it possible to use all 28 dominoes arranging them in squares of
four? What patterns can you see in the solution(s)?
How do you know if your set of dominoes is complete?
Use these four dominoes to make a square that has the same number of dots on each side.
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.
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...
Using the 8 dominoes make a square where each of the columns and rows adds up to 8