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Poly Plug Rectangles

Age 5 to 11
Challenge Level Yellow star
Primary curriculum
  • Problem
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What do you know about rectangles?
Where could the rectangle be?  How do you know?
Where can't the rectangle be?  How do you know?

Related Collections

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Consecutive Numbers

An investigation involving adding and subtracting sets of consecutive numbers. Lots to find out, lots to explore.

Roll These Dice

Roll two red dice and a green dice. Add the two numbers on the red dice and take away the number on the green. What are all the different possible answers?

Maze 100

Can you go through this maze so that the numbers you pass add to exactly 100?

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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.

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

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