近年来,对于课堂教学的有效性有很多说法.我的理解是:一堂课是否有效,不是看这堂课的容量有多少,而是这堂课的容量是否适合这个班级的学生;不是看教师在课堂上的表现是如何的出色,而应注意在这节课上学生的参与程度和理解有多少;也不是看这节课的内容是否很合新课标的要求,而应注意学生在知识与技能方面能否都有所收获.化学是一门以实验为基础的科学,与生活联系很密切但有些知识的理论性很强学生 In recent years, there are many explanations for the effectiveness of classroom teaching. My understanding is that whether a lesson is valid or not depends not on the capacity of the lesson, but on whether the capacity of the lesson is suitable for students in this class or not How well the performance in the classroom, but should pay attention to how much the students participate in this class and understanding; nor is it to see whether the content of this class is very fit for the requirements of the new curriculum standards, but should pay attention to students in knowledge and Skills are all gain.Chemistry is an experiment-based science, and life is very close but some knowledge of highly theoretical students