Stage 4 Dinosaur World Educational Puzzle | Advanced Wooden Jigsaw for Kids 3.5+ | 7-Stage Concentration Training (1-7 Years) | 48-63 Piece Puzzle Set | Includes Manual Reward Stickers | Premium 5mm Plywood | Number Learning on Back | Non-Toxic Material | Parent-Child STEM Toy | Develops Observatio

• 【Professional 7-Stage System】As the fourth stage of our educational puzzle series, this 48-63 piece dinosaur-themed set is specially designed for kids 3.5+ to systematically develop concentration and logical thinking. • 【Dinosaur World Exploration】Vibrant prehistoric dinosaur scenes help children recognize different dinosaur species and characteristics while playing, stimulating scientific curiosity and sustained focus. • 【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 observation skills with rich dinosaur 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 3.5+ kids' concentration and cognitive development.