问题设计是教学设计中的一个重要环节,问题设计体现在课堂教学中就是课堂提问,课堂提问是课堂教学的主要形式,也是师生交流的重要途径。新课改实施以来,学生的学习已从被动接受式学习转为自主探究性学习,在课堂教学中,充分体现了学生的主体地位。一堂好的化学课,教师的巧设妙问能激发学生积极 Problem design is an important part of instructional design. The problem design is reflected in the classroom teaching questioning, classroom questioning is the main form of classroom teaching, and also an important way for teachers and students to communicate. Since the implementation of the new curriculum reform, students’ learning has shifted from passive learning to independent inquiry learning. In classroom teaching, students have fully realized their dominant position. A good chemistry class, the teacher’s clever questioning can inspire students to be positive