Investigate the effects of the half-lifes of the isotopes of cobalt
on the mass of a mystery lump of the element.
Stage: 5 Challenge Level:
The maths for half-life of drugs is identical to that for
Make a table of days against tablets and each day add up
the remaining levels for all drugs taken thus far. Thus, on the
$n$th day there will be the effect from $n$ tablets to add up. You
should do this numerically.
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.