Fang-Chi Liang
Department of Computer Science National Chengchi University
Email：imiris@nccu.edu.tw
I-Sheng Lin
Department of Computer Science National Chengchi University
Email：104753004@nccu.edu.tw
Tsai-Yen Li
Department of Computer Science National Chengchi University
Email：li@nccu.edu.tw
Hsien-Ta Lin
Department of Education National Chengchi University
Email：hsienta@nccu.edu.tw
Abstract
In recent years, 3D printing technologies have become prevailing in educational environments. For example, allowing students to design 3D models or use customized teaching aids in class can facilitate their understanding of abstract concepts. Nevertheless, the printing quality of 3D models is closely related to the design quality of the model, which is also the goal of the classes teaching 3D modeling. In this work, we have developed a collaborative learning system called “3D Model Co-learning Space” to support the storage, sharing, display, and discussion of 3D models. The system has the following features: (1) Given a 3D model, the system can automatically compute an optimal view based on the size and the shape of the model. The system allows the authors to adjust the view if not satisfied. (2) The system provides group tag and attribute tag to label an updated model. The teachers can use the group tag to divide a class into groups and use attribute tag to annotate the model for searching. (3) The system provides the function of peer review, in which each member of a group can evaluate and comment on a given 3D model based on its characteristics such as appearance, printability, completeness. When making a comment, a user is allowed to choose a viewpoint and place a marker on the model to point out the target of the comment. Other users can simply click on the comment button to restore the view set by the peer. We hope that through the 3D model co-learning space, we can not only allow the students to easily share their design of 3D models, but also enhance the students’ ability in comprehending and improving the quality of a 3D model.
Keywords :3D Printing, 3D Modeling, Cooperative Learning, Peer Assessment, 3D Model Co-learning Space