The coke machine in college takes 50 pence pieces. It also takes a certain foreign coin of traditional design...
Age 14 to 18 Challenge Level
Try making some of the patterns by cutting up two squares of paper in contrasting colours.
How does this help you work out what proportion of the total area of the square is taken up by each colour?
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.