所谓问题情境教学是指以问题为主线来组织和调控教学.一个好的问题情境能启发学生的思维,能促进和提高学生运用已有的知识去解决问题的能力、语言表达能力、动手实验和设计实验的能力、观察能 The so-called problem-situation teaching refers to the organization and regulation of teaching by taking the problem as the main line. A good problem situation can inspire students’ thinking, and can promote and improve the students’ ability to use existing knowledge to solve problems, language expression ability, and hands-on experimentation. Ability to design experiments and observe energy