参与式教学模式在有机反应机理教学中的运用——以卤代烃的亲核取代反应为例

Application of Participatory Teaching Mode in Organic Reaction Mechanism Teaching——Take Nucleophilic Substitution Reaction of Halogenated Hydrocarbons as An Example

化学反应是有机化学的主要学习内容,而机理是对化学反应的详细描述,是理解反应的关键,因此反应机理是有机化学教学的重点。由于机理具有抽象性、微观性和逻辑性,学习者学起来往往具有一定的困难,因此,反应机理也是有机化学教学的难点。本文以卤代烃的亲核取代反应为例,运用参与式教学法,通过小组合作、角色扮演、交流展示、互评反馈等策略,将机理具象化、宏观化,充分调动学生的学习积极性,培养学生的探究精神和创新能力。

Chemical reaction is the main learning content of Organic Chemistry, and mechanism is a detailed description of chemical reaction. The reaction mechanism is very important in Organic Chemistry teaching for its crucial role in understanding the reaction. However, as the mechanism is abstract, microcosmic and logical, it is often difficult for learners to learn. Taking nucleophilic substitution reaction of halogenated hydrocarbons as an example, using participatory teaching method, through group cooperation, role-playing, exchange and display, mutual evaluation and feedback, etc, making the mechanism visualized and macroscopic, the method was proposed to fully mobilize students’ learning enthusiasm and cultivate students’ inquiry spirit and innovation ability.