Arithmagons

Arithmagons can make ideal starters or plenaries as well as being used for a main lesson activity.

Mathematics, Learning and Technology

What is an arithmagon? 

Clearly, the numbers in the rectangles are the sum of the numbers in the adjacent circles. Of course, there is no need to use addition and no need to use triangular arithmagons!

A revised and completely updated post can be found here.

 

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