Stone Age Counting
Why do this
problem?
The lovely thing about
this problem is that it does
not have a 'right' answer as such and therefore it is a great
context in which children can be creative and uninhibited. It is a
fantastic opportunity for you to encourage learners to justify
their hypotheses.
Possible approach
Project
the
picture on the screen for the whole group to see. Try to do
this in such a way as to obscure any text so that there are no
clues as to the meaning of the images. Without saying anything else
at all, invite pairs of children to talk about what they think the
picture may show. You could give each pair
this sheet, which
has a copy of the picture on it.
Share learners' ideas and, depending on what they say, focus
on, or steer them towards, the idea of counting and representing
numbers. Once this has been established, you can tell them where
the symbols were found and encourage them to work in their pairs to
come up with some more detailed explanations of the drawings.
Children could annotate the sheet to record their thinking.
In the plenary, discuss pairs' interpretations of the
pictures. The important thing is to encourage children to justify
their thinking. You may find that some pairs have different ideas
about the same symbol which may provoke a healthy argument! The aim
would be to try and come up with suggestions for each symbol that
don't contradict each other. You could then challenge children to
record other numbers in the same way, for example on mini
whiteboards.
Key questions
Do you think the length of the lines is important?
Why do you think some of the drawings have curved lines?
What are the similarities and differences between the
drawings?
How might you write other numbers?
Possible extension
Children could create their own way of representing numbers and/or
they could find out about the La Pileta cave.
Possible support
Some learners may find this task a little overwhelming because
there isn't a 'right' answer. They may well need frequent verbal
reassurance.