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'Part the Polygons' printed from http://nrich.maths.org/
Why do this
gives pupils opportunities to explore using trial and
improvement. However, using some visualising and planning before
tackling the problem will lead to a more considered solution.
There will need to be an assurance that the pupils are happy
with the names as outlined in the question.
This problem can be presented to the pupils in an individual
way with them having their own copies of the picture. (You could
print off this
.) However, many children will benefit from
working collaboratively and therefore being able to discuss each
You could use the interactive whiteboard to annotate the
picture during a plenary.
Tell me about the place where you've drawn your line.
What have you separated?
Ask the pupils to set out shapes in a different way that still
requires three lines to group them. What is their method for doing