Why do this problem?
gives an opportunity to discuss the quantities involved in the statements, and may involve estimation, calculation and/or research. Children will rely not only on what they have learnt from school, but also on information they have picked up from elsewhere. The discussion may well reveal some surprises, particularly in terms
of their understanding of different units of measurement.
The activity could be suitable for small group or whole class discussions, depending on the experiences of the children involved. You might find it helpful to print off copies of this sheet
which has all the statements on it. The statements could be cut up so that each is on a separate card.
The role of the adult in this kind of situation is to enable discussion to take place effectively. It may be that after an initial discussion about each statement, you assign a pair or small group of children a few statements each and invite them to come up with evidence to support their suggested answer. If possible, encourage them to record as they go along so that they have a
reminder of what they did.
So, what do "you" think about what "they" have just said?
Tell us your thoughts about ...
So, what do you all think?
Do some of you agree with ...?
If so, why? Or why not?
How could we be more sure?
Youngsters could create their own challenges in a similar way for others to discuss.
Try to help by listening, sharing and offering thoughts where appropriate.