课堂教学是教学的主要形式。学科教学的目标和内容,主要是通过课堂教学去实现的。不同的学习内容,在设计上各有其特有的规律。根据中学化学的学习内容和学习任务,中学的化学课可以分成新授课、复习课、练习课等几种课型,占了中学化学课相当比重的化学实验课,既可以以新授课的形式出现,也可以在复习课或者练习课出现,因此不作为独立的课型去研 Classroom teaching is the main form of teaching. The aims and contents of subject teaching are mainly achieved through classroom teaching. Different learning content, in the design of each have their own unique laws. According to the learning content and learning tasks of middle school chemistry, chemistry class in middle school can be divided into several classes, such as new lecture, review class and practice class, which occupy a large proportion of chemistry experiment class in middle school chemistry class, , Can also appear in the review class or practice class, so not to study as an independent course