塑料薄膜撕扯实验在聚合物教学中的应用及讨论

Discussion on Tearing Experiment of Plastic Film in Teaching of Polymer

结合新课标要求,揭示塑料薄膜撕扯实验在聚合物教学中的重要性、必要性。通过教学片段设计,发展学生"宏观辨识与微观探析、证据推理与模型认知"化学学科核心素养,并让学生认识物质的性能不仅取决于结构,也取决于生产工艺。并对人教版初、高中化学教材和教参中相关问题展开讨论和解释,以期更好地服务教学。

This paper revealed the importance and necessity of the tearing experiment of plastic film in teaching of polymer based on the requirements of the new curriculum standards;teaching fragments were designed to develop the core literacy of chemistry discipline of "macro identification and micro analysis, evidence reasoning and model cognition" for students, and enabled students to understand the nature of substances not only depends on the structure, but also on the production process. Then, this paper also discussed and explained the similar questions in the chemistry textbooks and references of the People’s Education Press for junior and senior high schools in order to better serve the teaching.