Label this plum tree graph to make it totally magic!
The Great Weights Puzzle
Stage: 4 Challenge Level:
For the first weighing you need to put 4 weights on each tray.
Now look at each possible outcome of the first weighing and decide
what you would do in each case.
You might like to first consider the case when the scales balance
on the first weighing - what do you know about all the weights on
You might also like to think about the problem with fewer weights
first, and use ideas you come up with there for the 12 weight
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.