Stage 5 Underwater World Educational Puzzle | Advanced Wooden Jigsaw for Kids 4+ | 7-Stage Imagination Training (1-7 Years) | 72-110 Piece Puzzle Set | Includes Manual & Reward Stickers | Premium 5mm Plywood | Number Learning on Back | Non-Toxic Material | Parent-Child STEM Toy | Develops Creativity

• 【Professional 7-Stage System】As the fifth stage of our educational puzzle series, this 72-110 piece underwater-themed set is specially designed for kids 4+ to systematically develop imagination and creativity. • 【Underwater World Exploration】Vibrant marine life and ocean scenes stimulate children's curiosity about the underwater world while playing, enhancing spatial imagination and artistic creativity. • 【Premium Safety Material】Made with 5mm thick plywood (2x thicker than average), warp-resistant and durable. All edges are smoothly polished, certified by EN71 with non-toxic water-based paint. • 【Dual Learning Function】Front side develops artistic perception with rich ocean scenes, while back side numbers naturally teach counting, improving hand-eye coordination and math skills. • 【Complete Educational Kit】Includes color instruction manual and multiple reward stickers to motivate learning, making it an ideal parent-child interactive teaching aid for 4+ kids' imagination and cognitive development.