设计意图:零的教学,可以说贯穿于初中数学教学的始终,零是学生最喜欢的一个数,但往往又是学生学习上的盲点,所以有必要通过专题教学,让学生对零引起足够的重视,本节课试图以零的意义为线索,串联前后内容,串联课内外知识,使学生对零的内涵认识更加深入而全面.通过相关人文理念渗透,使学生得到美的熏陶,通过数学史教学让学生感受到不 Design intent: zero teaching, can be said that throughout the junior high school mathematics teaching has always been zero is a student’s favorite number, but often is the blind spot on the student learning, it is necessary through thematic teaching, so that students cause zero to zero Emphasize, this class tries to take the meaning of zero as the clue, concatenates the front and back content, concludes the knowledge inside and outside the class, makes the student to deepen and the comprehensive understanding to the connotation of zero. Through the infiltration of the related humanity idea, causes the student to get the beautiful influence, through the mathematics history teaching Let the students feel no