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由于受升学考试的影响,九年级化学教师考虑得最多的是如何帮助学生拓展知识,挖掘知识的深度、扩大知识的广度,通过灌输式教学来增大课堂容量,因此教师在课堂上不敢给时间让学生去自学、去讨论,不敢给机会让学生进行探究,更不敢放手让学生自主学习。化学计算是在已有的化学概念和原理的基础上,培养学生思维能力及运算技巧的问题,也是化学学习中从宏观到微观、从定性到定量的认识的提高,它体现了化学学科发展的趋
Due to the entrance examination, the ninth grade chemistry teachers to consider the most is how to help students develop knowledge, tap the depth of knowledge, expand the breadth of knowledge, through instillation teaching to increase the capacity of the classroom, so teachers in the classroom did not dare to give Time for students to self-study, to discuss, not to give students the opportunity to explore, not to let students learn independently. Chemistry is based on existing concepts and principles of chemistry, to develop students thinking skills and computing skills, but also chemistry learning from the macro to the micro, from qualitative to quantitative understanding of the increase, which reflects the development of chemistry Trend