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### Number and algebra

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# Domino Tetrads

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### Dominoes

### Domino Magic Rectangle

Links to the University of Cambridge website
Links to the NRICH website Home page

Nurturing young mathematicians: teacher webinars

30 April (Primary), 1 May (Secondary)

30 April (Primary), 1 May (Secondary)

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Age 11 to 14

Challenge Level

- Problem
- Getting Started
- Student Solutions

A solution has been offered by Jonathan R. and his friends Jonathan
M. and Matthew G. of Steyning Saint Andrews C.E Primary School.
There is more than one solution but it needs a means of
representing each arrangement in order to show what is happening
and to identify possible avenues to further solutions. There is
still a lot more in this problem if you are prepared to have a go
but thanks for this start Jonathan.

Together my friends and I solved this puzzle. Here is our solution:

1) yes you can make the squares with all the pieces

2) in every square you have a double at the top .

3) we could not find any other solutions to this puzzle and we don't think itis possible for another solution.

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.

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...