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Tunghai University Department of Applied Physics Asso. Professor Chang-Ren Wang and student Huai-Chi Chang participated in the "2021 National Science Teaching Aids Creative Design Competition" and won the first prize in the Central Taiwan Region. This competition is hosted by the Inquiry Based Science Education Society of Taiwan. A total of 76 teams signed up in the com. The competition which was divided into three regions: Northern, central and Southern. There were 24 teams in the central region and the competition is fierce. 

Tunghai Department of Applied Physics Professor Chang-Ren Wang (left 7) and student Huai-Chi Chang (left 6) and the judges 

Tunghai's entry in the competition was "Mist in a Bottle", using easily available PET bottles as the main teaching aids. Using alcohol or water, students can observe the formation and disappearance of "fog droplets" in a bottle. This teaching aid improves the comparatively dangerous and complicated part of the traditional demonstration, and highlights the importance of "heterogeneous nucleation" in the formation of artificial rain. It can be used as a teaching aid for earth science and physics courses in secondary schools. The materials of the works are easy and cheap to obtain, and it can clearly express the scientific concept to be conveyed. The first prize was won with high affirmation from the judges. 

Department of Applied Physics student Huai-Chi Chang

Smoke in the bottle luminates after compression

Prof. Chang-Ren Wang has participated in the competition for 4 years and won previous prizes. According to Prof. Wang, the Department of Applied Physics has outstanding research performance and strives for continuous improvement in teaching. The development of teaching aids and teaching materials is an important part for the improvement. Wang thanked the judges for the affirmation with the first prize this year. In addition to reflecting on his own teaching through previous participation, Prof. Wang also tried to introduce new elements into old teaching materials and developed brand-new teaching materials. Students who participate in the competition also have the opportunity to re-organize what they have learned in class. 

Department of Applied Physics Professor Chang-Ren Wang 

The development of teaching aids and teaching materials takes time. The Department of Applied Physics, with the support of the Ministry of Science and Technology's popular science education plan and science education implementation project, has developed teaching aids and materials for various scientific fields, especially in areas related to the promotion of nanoscience. It is hoped that simple and effective popular science teaching materials will be continuously promoted and the university's social responsibilities will be fulfilled through popular science activities. These development results will be used in science-related courses in secondary schools and colleges.