Professor Poplar's Gregory Grows Up! Layered Jigsaw Puzzle by Imagination Generation Professor Poplar's patented guide to growing up! Five layered puzzles jigsaw puzzles in one Innovative layered jigsaw design combines five puzzles inside a single base Solve five stages with rising difficulty: baby, toddler, kid, teen, and grown-up Develops fine motor skills and encourages critical thinking and problem solving The entire puzzle contains 17 pieces in all