Shape Matching

I cut out the shapes provided by The Itty-Bitty Bookworm and had Caden match the shapes.  Totally got the matching part of the activity.  I asked him other questions like:  What color each shape was?  What was the name of each shape?  Point to the big shape...small shape?  He gets yellow and red mixed up, but always knows yellow.  He knows blue and the sizes of the shapes.  He also gets the triangle confused sometimes.  He knows all the following shapes:  square, circle, diamond, heart, octagon, star but is confused with the triangle.