常言道:“万事开头难”。要想上好一节课,良好的开端是成功的一半。多年来,总是力求在上课时以巧妙地创设情境引入,一开始就把学生的注意力和好奇心集中到课堂上来,经过潜心的探索和试验,总结出了初中数学课的几种导入方法。一、复习导入法复习导入法可以将新旧知识有机地结合起来,使学生从旧知识的复习中自然获得新知识。例如,在讲二次函数的图象抛物线与x轴的交点的情况时,先复习如何用一元二次方程的根的判别式判断一元二次方程的根,然后引入到研究抛物线与x轴的交点的问题上来。大家知道抛物线与x轴的交点的纵坐标为0,就是函 As the saying goes: “everything is hard at the beginning.” To start a good class, a good start is half done. Over the years, always trying to create situations ingeniously introduced in class, from the beginning to concentrate the students’ attention and curiosity into the classroom up, after painstaking exploration and experimentation, summed up several introductory methods of junior high school math class . First, the review import method Review import method can combine the old and new knowledge organically, so that students naturally get new knowledge from the review of old knowledge. For example, in the case of the intersection of the image parabola of the quadratic function with the x-axis, we first review how to determine the root of the quadratic equation with the discriminant of the radical of the quadratic equation and then introduce the root of the quadratic equation into the parabola The problem of intersection point up. We all know that the ordinate of the intersection of the parabola and the x-axis is 0, which is the letter