问题情境就是教师为了某一教学目标而创设的具有一定针对性、趣味性、一定难度,需要学生作出一定努力才能完成的学习任务。科学创设问题情境不仅可以激发学生的学习兴趣,提高学生参与学习的主动性和积极性,还能培养学生发现问题和提出问题的能力。下面,笔者就以其中“问题情境为课堂教学中心”的教学模式谈谈我的实践与思考。 The problem situation is the learning task that teachers have created for a certain teaching goal with some pertinence, interestingness and certain difficulty, which requires the students to make some efforts to accomplish. The situation of creating science problem not only can arouse students’ interest in learning, improve the initiative and enthusiasm of students to participate in learning, but also cultivate the ability of students to discover and ask questions. Next, I will talk about my practice and thinking about the teaching mode in which the “problem situation is the center of classroom teaching.”