Why do this
requires perseverance and logical thinking.
Learners may find it useful to use counters or other equipment and
to develop a recording system.
How much do you have left in the 9 litre jug if you fill the 7
litre jug? ... the 4 litre jug? ...the 2
How will you remember what you have tried?
Learners could try the
Jugs of Wine
Using counters or other equipment to represent litres might help