一、课前导入,激发学生的学习兴趣无论是授新课,还是练习课、复习课,一个好的课前导入,能引起学生的认知冲突,产生探奇觅胜的求知欲,引发学生的学习兴趣,使学生很快地进入最佳的学习状态,为教学创设一种良好的情境。特别是在数学教学中,要从学生的生活经验和已有的生活背 First, the introduction before class, to stimulate student interest in learning Whether to teach new courses, or practice class, review class, a good pre-class import, can lead to cognitive conflicts among students, resulting in a prosperous curiosity, triggering students Interest in learning to enable students to quickly enter the best learning state, to create a good teaching situation. Especially in mathematics teaching, from the student’s life experience and the existing life back