新课改以后,探究式教学受到广大科学教育者的重视。为促进学生转变前概念,形成正确的科学概念,教师在实施探究式教学中应了解学生的前概念,并给予正确的指导,引发认知冲突。 After the new curriculum reform, inquiry teaching has received the attention of the majority of science educators. In order to promote the students to change their concepts and form the correct concepts of science, teachers should understand the students’ preconceptions and give them the correct guidance in initiating inquiry-based teaching so as to trigger cognitive conflicts.