树立新的教学观,建立民主和谐的师生关系,精心备课、优化作业设计,实施有效的教学行为从而提高初中化学课堂教学的有效性。 Establish a new teaching concept, establish a democratic and harmonious relationship between teachers and students, carefully prepare lessons, optimize homework design, and implement effective teaching behavior to improve the effectiveness of junior high school chemistry classroom teaching.