Four jewellers share their stock. Can you work out the relative values of their gems?
Dilution Series Calculator
Age 14 to 16 Challenge Level:
This interactive diagram shows a dilution series made from four dilutions of an initial bacterial solution. At each stage of the dilution, a quantity of the culture is diluted with a quantity of the medium
Try to calculate the dilution factor for various combinations of initial numbers. Can you create a general rule for the overall dilution?
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.