I have to say that I love these Mighty Mind shape builders.  Our three-year-old does a fabulous job placing the right shapes/colors in their place.  However, what really amazed me was when she was able to so quickly piece the shapes together to make a larger and more complex shape.  Great job! 

Shayla drew us a geometric pattern on the board made up of several colors and shapes.  She took her opportunity to play teacher and show us how many shapes she had implemented in the detail.

Another toy I really love are these number and word cards with cut-out shapes for the letters that spell the words.  The picture below shows what Lillian is "spelling" and she can say each letter as we place it in its space.  At this point it is more like a puzzle and the letters don't go in order, but rather in the order they are discovered to fit!  These used to be in a complete book but the book fell apart and I just took the card frame out and the cards and it has worked for years.  Shayla actually used these about five years ago when she was Lillian's age.