A Powerpoint with 3 slides of hex shapes.

Cut out hexagonal shapes and use them to plan essays, link or sequence ideas.
Excellent for group work, recapping topics, organising ideas.
You can colour-code them to group concepts and plan written answers.
Print & cut them out in different colours.
Pupils can lay them & move them around, ideally, on an A3 sheet.

It has also proved to be a good way of improving handwriting!