Magic Cube: Development of a Mobile Educational Game for Training Learners Spatial Reasoning Ability Spatial reasoning is an important ability in math, engineering as well as in our daily life. A common practice to train spatial reasoning is using 3D cube paper models to demonstrate the unfolding process from a 3D cube to a 2Dshape net in class. However, this approach could incur limitations and maintenance cost. This study developed a mobile game  Magic Cube to address this limitation and seek to improve studentsu0027 engagement. An experiment was conducted to initially evaluate the game with 29 7th grader from a junior high school in northern Taiwan. Results indicate that studentsu0027 learning performance was improved after playing the game. Also, students generally possessed positive perceptions toward the game and had positive gaming experiences. The detail of the game design and the implications of the results are discussed in this study.

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 gesturebased interactions and intuitively explore the spatial relationship between spheres and polyhedrons is proposed in this paper. The proposed gesturebased 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.