Bring everyone's attention to the board. Hold up the large square and elicit the shape. Stick it to the board. Then hold up the large triangle, elicit that shape and stick it to the nose position. Keep doing this with all of the shapes until you have a complete head. Everyone will enjoy watching a face grow out of the shapes they have been playing with. Teach the face vocab for each face shape (e.g. a triangle nose, a rectangle mouth, etc.)