教师精心设计并高质量地上好每堂课，才能不浪费学生时间，减轻学生负担，让学生学会学习化学，这是对学生进行素质教育的根本途径。要高质量地上好课，必须处理好课堂中的三维因素：教材、学生和教师。课堂教学中起主导作用的教师主导什么？那就是安排好教学结构，而教学结构 Well-designed and high-quality teachers make each class a good lesson, so as not to waste student time, reduce the burden on students, and enable students to learn chemistry. This is the fundamental way for students to conduct quality education. To have good quality classes on the ground, we must deal with three-dimensional factors in the classroom: textbooks, students, and teachers. What do teachers who play a leading role in classroom teaching lead? That is to arrange the teaching structure and the teaching structure