### Chain of Changes

Arrange the shapes in a line so that you change either colour or shape in the next piece along. Can you find several ways to start with a blue triangle and end with a red circle?

### Six to Four

Move four sticks so there are exactly four triangles.

### Posting Triangles

If you can post the triangle with either the blue or yellow colour face up, how many ways can it be posted altogether?

# Colouring Triangles

##### Stage: 1 Challenge Level:

Children from Dennington Primary School have worked very hard on this problem. Julia and Ryan have each found a different way of making a symmetrical pattern with two colours:

Julia also used three colours to create this symmetrical pattern and has drawn in the line of symmetry too:

Ben has used the white background with two other colours to make these designs:

Kesavan from Latymer All Saints C of E Primary sent the following designs, which all have a vertical line of symmetry:

Rebecca looked at ways of colouring the small triangles with four colours so that no two triangles of the same colour are side by side: