新课程强调:“学生的学习过程就是一个不断发现问题、提出问题、解决问题和再去认识更高层次问题的过程.问题对于学习过程来说,有着至关重要的作用.以问题为中心,围绕着科学的能激发学生思维的问题展开学习,也是科学探究学习最重要的特征”.将教学内容以问题的方式呈现出来,并形成具有一定逻辑关系的问题链接,既可以暗示学生学习和探究的线索,又可以有效地激活学生的认知结构,激发学生求解问题的欲望.因此在课堂教学中努力创设恰当的的问题情境,通过问题 The new course emphasizes: “Students’ learning processes are a constant process of finding problems, asking questions, solving problems, and getting to know more advanced problems. Questions have a crucial role to play in the learning process. , Which is also the most important feature of science inquiry learning around the scientific problem of stimulating students’ thinking. ”The teaching content is presented in the form of questions and forms a logical link of questions, which can not only imply that students learn And explore the clues, but also can effectively activate the cognitive structure of students to stimulate students desire to solve the problem.Therefore, in classroom teaching efforts to create the appropriate problem situations, through the problem