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对化学实验重要性的认识,新教材安排了大量的演示实验和一定数量的学生实验。新教材与旧教材中演示实验安排有明显的变化:增加了演示实验数量,更注重操作简化、安全、减小污染,增加了探索和研究的成分。在新课程环境下,化学教师如何利用现有条件,在演示实验教学中,充分体现学生的主体地位,发挥演
With regard to the importance of chemical experiments, the new textbook has arranged a large number of demonstration experiments and a certain number of student experiments. The demonstration experiment arrangements in the new and old textbooks have changed significantly: the number of demonstration experiments has increased, and more emphasis has been placed on simplifying operations, safety, reducing pollution, and increasing the components of exploration and research. Under the new curriculum environment, how chemical teachers can use existing conditions to fully demonstrate the student’s dominant position and demonstrate performance in the demonstration experiment teaching