| Summary: | 碩士 === 國立新竹教育大學 === 數位學習科技研究所 === 101 === In recent years, a lot of high-tech experimental instruments were invented for examining the nano structures of materials. For example, we can use a transmission electron microscope (TEM) to obtain diffraction patterns for the analysis of a material’s fine structure. The TEM is a high-resolution microscope and thus very expensive, and the operator must have a license to conduct experiments. With the limited teaching time, most learners can’t operate it by themselves. Even if they have a chance to use it, it is still difficult for them to analyze the experimental results. Therefore, it is difficult for learners to understand its principle and operating procedure.
The study is cooperated with "Nanotechnology Education Training Project" promoted by Taiwanese government, and the objective is to develop a virtual TEM laboratory using 3D virtual reality technology and mobile devices to assist students in learning TEM and the related knowledge about nano technology. The learning objectives of the virtual TEM laboratory include: understanding the principle of TEM and its operating procedure as well as analyzing the physical properties of samples, such as diamond and graphite, according to their 3D crystal structures. The system can be used repeatedly for the study of TEM’s principle and the related knowledge about 3D crystal structures of different materials. In this study, a teaching experiment was conducted to investigate the learning effectiveness of the virtual TEM laboratory. The experimental results show that the virtual TEM laboratoru can help learners improve their learning achievement and motivation in exploring the knowledge about nano scale and the related study field.
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