Hand ControlAR: An Augmented Reality Application for Learning 3D Geometry

The traditional way of learning geometry cannot provide a great support for novice students since the geometric figures are 2D on the blackboard or the book. In consideration that Augmented Reality(AR) provides an intuitive way to learn geometry, an interactive AR system that enables students to naturally and directly manipulating 3D objects through hand gesture-based interactions and intuitively explore the spatial relationship between spheres and polyhedrons is proposed in this paper. The proposed gesture-based interaction enables the user manipulate AR objects in the real 3D space instead of 2D space. We design three levels of study to enable students to learn the geometric concepts as well as an experiment to evaluate the effectiveness of the AR system. Analysis of experimental results showed that the proposed system is easy to use, attractive, and helpful for students.