A new design for these four layer puzzles which show the transition of growth from birth to maturity. Each phase of growth is larger and requires more pieces to complete the picture. New designs include a chicken and frog. Puzzles helps develop basic skills such as shape recognition, concentration, goal setting, patience and a sense of achievement, which will stand children in good stead for school. Puzzles help develop hand-eye coordination and fine motor skills due to the precise nature of matching each piece exactly. What's in the box 1 x 4 Layered chicken puzzle 1 x 4 Layered frog puzzle