Advanced SystemIntroduce advanced curriculum system and service system, combine education to develop advanced STEM system. Four in one Science,Technology,Engineering,Mathematics, most suitable learning system for children's multi-faceted development Realistic 3D MannequinContains multiple organs of the human bodyheart,lungs,liver,stomach,kidneys,intestin). Learn the names and functions of human anatomy such as bones and organs through modelsgreatly improved the child's knowledge level.Fit well for Classroom Demonstration Tools, Teacher Accessories Exercise children's comprehensive abilities in an all-round way: stimulate children's interest and exploration spirit, and cultivate children's hands-on ability, imagination, observation ability and analysis ability PackageLightweight and non-toxic PVC material, easy to carry and clean. With the exquisite packaging box and manual, the best gift choice for Christmas Day, Thanksgiving Day, New Year