article
Arclets explained
This article gives an wonderful insight into students working on the Arclets problem that first appeared in the Sept 2002 edition of the NRICH website.
2D shapes and their properties
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articlePi, a very special number
Read all about the number pi and the mathematicians who have tried to find out its value as accurately as possible. -
articleCircles, circles everywhere
This article for pupils gives some examples of how circles have featured in people's lives for centuries. -
articleWhat's inside/outside/under the box?
This article describes investigations that offer opportunities for children to think differently, and pose their own questions, about shapes. -
pageLafayette
What mathematical words can be used to describe this floor covering? How many different shapes can you see inside this photograph? -
pageWatch those wheels
Have you ever noticed the patterns in car wheel trims? These questions will make you look at car wheels in a different way! -
articleLet's get flexible with geometry
In this article for primary teachers, Ems explores ways to develop mathematical flexibility through geometry. -
articleGoing deeper: achieving greater depth with geometry
This article for Primary teachers outlines how providing opportunities to engage with increasingly complex problems, and to communicate thinking, can help learners 'go deeper' with geometry. -
interactivityIntroducing NRICH TWILGO
Age5 to 18Challenge level
We're excited about this new program for drawing beautiful mathematical designs. Can you work out how we made our first few pictures and, even better, share your most elegant solutions with us? -
problemBaby circle
Age16 to 18Challenge level
A small circle fits between two touching circles so that all three circles touch each other and have a common tangent? What is the exact radius of the smallest circle?