4D Human Anatomy Respiratory System ModelBusy hands build strong minds! Learn about Respiratory System Anatomy with this fun 4D lungs puzzle! Model has a transparent cutaway to show internal organs and structure. Challenge your critical thought and mental acuity. Build dexterity, fine motor skills and problem solving skills. Reinforce learning through hands-on exploration! A nice addition to curriculum for teaching animal science or any child’s science fair project related to human anatomy. Collect the series and have your own human anatomy museum!3 in stock