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Vincent and Tara are making triangles with the class construction set. They have a pile of strips of different lengths. How many different triangles can they make?

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Noah saw 12 legs walk by into the Ark. How many creatures did he see?

Colouring Triangles

Age 5 to 7
Challenge Level

What do you see below?


     

What do you notice?
What is the same and what is different about the two pictures?

Now, it is your turn to colour!
Explore ways of colouring the black and white outline of the triangles:


Can you make symmetrical patterns? With two colours? Three colours?
More than three colours?

You may like to use the interactivity below to try out your ideas. This sheet of blank triangles might also be useful.

We would love to see the triangles you create.  Do send them in along with your explanation of how you know the pattern is symmetrical.



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.