This problem will help children to refer to the shapes by name and visualise the next shape to place in the pattern. They will need to look carefully at the properties of each shape. It will also encourage them to use a trial and improvement approach in solving problems.
You will need plenty of Logic Blocks or of shapes cut out from this sheet which has two copies of each of the shapes. A full set of Logic Blocks can provide enough for four children, pairs or small groups depending on how the children are working. (One group has the large, thick pieces, one the large, thin pieces and so on).
You could start with one of the pieces and ask children to describe it. Ask if they can find one which is the same shape but a different colour. Encourage the children to work in pairs or threes on the problem so that they are able to talk through their ideas with each other.
Are you going to change the colour or the shape this time?
Which shape are you going to use next?
Can you find another way of doing it?
Why can't you use all the shapes this time?
Those who find these tasks straightforward could use a full set of Logic Blocks and also change the size and thickness of the pieces.
It might help some children to make their own chains which started with the blue triangle, but without specifying the end point.