余文森教授指出:课堂教学有效性是指通过课堂教学使学生获得发展。它是新课程倡导的一种教学理念,是指教师在遵循教学活动的客观规律下,经过一段时间的课堂教学活动后,学生在学业上有收获,有提高,有进步。如何做到有效提高化学课堂教学质量,减轻师生负担,最根本是 Professor Yu Wensen pointed out: The effectiveness of classroom teaching refers to the development of students through classroom teaching. It is a kind of teaching idea advocated by the new curriculum. It means that under the objective law of following the teaching activities, after a period of classroom teaching activities, the students have learned, improved and progressed. How to effectively improve the quality of chemistry classroom teaching, reduce the burden on teachers and students, the most fundamental is