Buying a Balloon
Ask the children to find as many combinations of six coins as they
can. One challenge is to organise the answers in a way that allows
the children to discover if they have included all of the
possibilities or if some have been omitted. As the answers range
between 6 pence to 6 pounds, the children need to justify the
reasonableness of each possibility and decide which is the most
likely cost of a balloon. This activity also provides the
opportunity to construct a graph showing the possible cost and the
number of responses the children make to each choice and then to
interpret the results of the findings.