Promoting Advancement and Computerization of Monodzukuri Education in Junior High School with Three-dimensional Molding Device

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New mechanism learning kits comprising gears, links, etc. was developed. Using the kit, many kinds of mechanisms are assembled easily on a panel and students are able to make a mechanism which can move just as it was intended. Therefore, the kit improves the learning effect for mechanism, because each parts of the kit is designed using 3D-CAD that can be machined easily using 3D-printers. Furthermore, the parts can be molded in large quantities using resin. Therefore, the kit can be introduced to schools at a lower cost. In this paper, designs of the parts and assembling methods of the kit are explained in detail, and evaluations from the technical course teachers who oversee practice classes were carried out.