STUDY ON TEACHING MATERIALS USING 3D-MODEL FOR ROOF FRAMING GEOMETRY

Abstract

 In this paper, we proposed teaching materials to quickly acquire carpenter skills. The contents of these teaching materials are focused on a drawing method called Kikujutsu (Roof framing geometry). In Japan, there is a problem that there are few young people who want to become a carpenter. As the number of young carpenters is diminishing, carpenter's skills need to be inherited smoothly from experts to beginners. Therefore, it is necessary to make the beginners acquire carpenter skills in a short time.

  Conventionally, net drawing teaching materials were used to learn roof framing geometry. However, the net drawing method needs a long learning period. Because it deals with three-dimensional things in two dimensions, high space grasp ability is required. Therefore, in this study, the teaching materials of roof framing geometry were developed with the drawing made by 3D-CAD and the model made by 3D-printer so that the members of 3D space could be understood visually.

 Moreover, in order to clarify the effectiveness of proposed teaching materials, the results of the training were verified for 44 students majoring in architecture. At first, 44 students were divided into two groups. One is T group, and the other is M group. T group learned roof framing geometry using the net drawing teaching materials. On the other hand, M group used the 3D-model teaching materials. Confirmation tests were conducted on these two groups after class. As a result of the confirmation test, it was found that the teaching materials using the 3D-model had a large educational effect.