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MS| Inquiry-Based Teaching

发布时间:2023年11月29日 16:14 编辑: 

Why Do Sunlight Spots Appear Crescent-Shaped During a Partial Solar Eclipse?


With this question in mind, the eighth-grade students conducted an inquiry-based experiment on pinhole imaging this week.



In our physics lessons, we encourage students to grasp knowledge through practical observation. Inquiry-based learning goes beyond imparting concepts and theories; it emphasises active student participation and discovery. This approach cultivates students' spirit of exploration, problem-solving abilities, and teamwork, allowing them to experience the joy and challenges of science in their learning journey.



For the experiment, we coated the bottom of a paper cup black and created a small hole by pinching it. We covered the open end of the cup with semi-transparent paper to act as a screen. By lighting a candle and allowing its light to pass through the pinhole, it reached the semi-transparent membrane.








The results of the experiment were remarkable! The students discovered that when light passes through a small hole, it forms an inverted and magnified image on the observation screen. Combining the ray diagram, the children discussed and explained the principle behind the pinhole imaging experiment — the straight-line propagation of light through a uniform medium. They further analysed and explored why the sunlight spot appears crescent-shaped during a partial solar eclipse.



Through inquiry-based learning, the students gained a deep understanding of the laws governing the propagation of light, and they obtained a tangible experience through their own hands-on experiment. They not only memorized theoretical knowledge but also developed the skills of observation, experimentation, analysis, and explanation. This lays a solid foundation for their future studies in advanced physics.





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