Vincent and Tara are making triangles with the class construction set. They have a pile of strips of different lengths. How many different triangles can they make?
Using a loop of string stretched around three of your fingers, what different triangles can you make? Draw them and sort them into groups.
Explore ways of colouring this set of triangles. Can you make symmetrical patterns?
Explore the triangles that can be made with seven sticks of the same length.