This article for pupils gives some examples of how circles have featured in people's lives for centuries.
Stage: 2 Challenge Level:
Using just a pair of compasses, a ruler and a pencil, recreate this Yin Yang symbol:
(You might like to use a black crayon or felt-tipped pen too!)
How would you explain to someone else what to do?
Why do this problem?
This challenge not only enables pupils to practise using a pair of compasses and measuring accurately, but it also provides a very good opportunity for discussing properties of shapes.
To begin with, it might be appropriate to display the image to the whole class and invite them to describe what they see. Children could share their own method for drawing the symbol with a partner and the two could decide which of their ways might be more efficient and why.
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. More information on many of our other activities
can be found here.