课堂留白是一种教学艺术,其关键环节是设问。教师在话题式复习课教学时,要善于营造问题情境,把学生的思维引到现实生活中去,让学生有时可想,有话可说。教师可先设计基础性问题,再由浅入深,先易后难,通过多层次追问,激发学生认知和思维冲突,进而提升学生思维品质。也可采用层层分解法化整为零,化难为易,将复杂问题简单化,抽象问题具体化,点燃学生的智慧火花。 Blanching in the classroom is a teaching art, the key link is asked. Teachers in the topic review class teaching, we should be good at creating a problem situation, the student’s thinking lead to real life, so that students can sometimes think, have something to say. Teachers can first design basic problems, and then by shallow, difficult, through multiple levels to stimulate student awareness and thinking conflicts, thus enhancing the quality of student thinking. Can also be used to stratify decomposition into zero, the difficulty is easy, the complexity of the problem simplification, abstract problems of specific, ignite the wisdom of students Spark.