本节课从问题探究式教学角度设计教学过程,通过创设问题情境,设置问题链,提供有关资源,让学生学生在问题情境中探索学习,较好的体现了教师的主导作用和学生的主体地位。通过课堂实践努力改变学生的学习方式,培养学生的探究能力,从而提高学生的科学素养。 In this lesson, teaching process is designed from the perspective of inquiry-based teaching. By creating problem situations, setting up problem chains and providing relevant resources, students can explore and study in problem situations, which better reflects the leading role of teachers and the dominant position of students . Through the practice of class, we try our best to change the way of students ’study and cultivate the students’ inquiry ability so as to improve their scientific literacy.