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Have You Got It?

Can you explain the strategy for winning this game with any target?

Counting Factors

Is there an efficient way to work out how many factors a large number has?

Is There a Theorem?

Draw a square. A second square of the same size slides around the first always maintaining contact and keeping the same orientation. How far does the dot travel?

Squares, Squares and More Squares

Age 11 to 14
Challenge Level

Can you dissect a square into:

$4, 7, 10, 13\ldots$ other squares?
$6, 9, 12, 15 \ldots$other squares?
$8, 11, 14 \ldots$other squares?

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.
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NRICH is part of the family of activities in the Millennium Mathematics Project.