Manypeople like to watch 3D movies. But do you know the students in the US canwatch 3D movies in class? They can learn a lot in 3D classes. In the US, somestudents can watch 3D movies in many classes, such as math, science andgeometry（几何）classes. The 3D classes show a special world to the students. They can helpstudents understand the knowledge（知识） better. Studentscan remember the knowledge easily.

    Thestudents like 3D movies very much. They say, "It's not difficult to learn,because you can remember all the things in the movies, and it's fun to learn."