Discovery Toys MONARCH BUTTERFLY PUZZLE 5 layers for progressive puzzle fun! Discover a butterfly's life cycle with this beautifully illustrated layered wood puzzle. Layers pictured on the base for visual cues. Pieces numbered by layer on the bottom to aid in assembly. Assemble the layers with or without the base. Learn more about the the North American king of butterflies with the included guide. Awesome Show & Tell item or Teacher's aid! From 3 years.