Kang Xuan's "Turning the Graph" makes the model move, and it is easy to learn graphics by turning the angle of view and interactive observation.

Features︰
1. Provide a variety of models in conjunction with the textbook legend.
2. Flip the model arbitrarily and observe the model changes.
3. Use the perspective menu to quickly go to a specific angle.
4. Switch the transparent mode and view the model hidden structure.
5. Colors are freely matched to enhance the observation.