所谓教材的宽度,是指教学中设计的问题,提供给学生思维空间的大小,课堂上传输给学生的信息量的多少.许多教师在教学中关注的往往是教学内容的深度,而不注意拓展知识的宽度,结果导致学生的学习效果受到影响.本人在教学中,通过引导学生构造思维导图,对学生的难点或疑点进行有效的突 The so-called width of teaching materials refers to the design of teaching problems, to provide students the size of space for thinking, the amount of information transmitted to the classroom how much.Many teachers in teaching is often concerned about the depth of teaching content, without paying attention to the expansion The width of knowledge, the results lead to the impact of the learning effect of the students themselves in teaching, by guiding students to construct mind maps, the students difficult or doubtful point effectively