Why do this
is accessible to all pupils - everyone can have
a go - but explaining why it is impossible with certain shapes is
more difficult. It is a good context in which to encourage pupils
to make conjectures and to verify them.
Do you have a system fortrying to trace over the
What do the shapes that work have in common?
Which other shapes do you think it will work for?
, with six of each shape and their diagonals drawn, will
be useful to print off for some pupils.