Use your mouse to move the green or red part of the discs. Can you
make a turning that shows what:
a) a book being opened looks like from above?
b) turning a volume knob on your music player looks like?
c) a bicycle wheel looks like when going along?
d) a door would look like from above as it's being opened?
e) what a hamster wheel looks like when the hamster's running
Describe and then show some other things that you do or have seen,
that turn in this way.
You can also have challenges that are just to do with the picture
you see, for example, can you make the turning shape appear on the
Can you make the red part twice the size of the green?
Have fun! You're experiencing Angles - the way turning is
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.