宋代教育家张载说得好:“学则须疑。”有了疑问,才会有求知欲,才会深入探究,才会深入思考。疑问是学生学习主动性和积极性的源泉。其实,学生对各种新事物、新道理是富有好奇心的,会自发产生“这是什么”“那是为什么”的疑问。然而,由于学生阅历浅,见闻少,他们所拥有的知识容量较小,因而能觉察到的知识空白也相对很少,尤其是初中阶段的学生。这样,老师作为信息源的 Zhang Zai, an educator in the Song Dynasty, put it well: “Studies must be questioned.” "In case of doubt, there will be thirst for knowledge before we can dig deeper and think deeply. Doubt is the source of student learning initiative and enthusiasm. In fact, students are curious about all kinds of new things and new truths and will spontaneously raise questions about what is this and why. However, since students have less experience and less knowledge, and they have less knowledge capacity, there are relatively fewer gaps in knowledge that can be detected, especially for junior high school students. In this way, the teacher as a source of information