Shape A, B and D all have 4 sides and 4 corner. Shape C is a triangle. It has 3 sides and 3 corners, so it is the odd one out. If you count the number of sides and corners on each shape you ...

Come back to the three connected sides idea. Continue making the triangle different shapes and size so that the student see a variety. Triangles examples: differing orientations and sizes 4. Together ...