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  • Early Years Foundation Stage

Triangular Faces

Age 7 to 11
Challenge Level Yellow starYellow star
  • Problem
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You might find it helpful to print off this sheet of coloured triangles and cut them out.
Can you begin to picture in your mind what the shape will look like?
Try joining two triangles together to start with, then add another one on, then another etc.
Don't be afraid to take apart what you've done to alter it if you discover something isn't quite right.
You could begin by joining the triangles together loosely with a small piece of sticky tape so you can easily cut them apart again if you find you want to change your mind.

This sheet will show some triangles with tabs on for joining in 3D.


You may also like

Construct-o-straws

Make a cube out of straws and have a go at this practical challenge.

Matchsticks

Reasoning about the number of matches needed to build squares that share their sides.

Little Boxes

How many different cuboids can you make when you use four CDs or DVDs? How about using five, then six?

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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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