论文部分内容阅读
新课程改革后,我们化学教学的方式、观念等都发生了改变,出现了众多新的教学方法和模式,极大地提高了课堂效率.但化学实验教学却依然问题较多,如“讲实验代替学生做实验”“播放多媒体视频中实验操作代替做实验”等现象依然存在.实验是化学的基础,教师应该努力运用各种实验方式,提高学生多维能力.笔者结合“探究金属化学性质”中运用多种实验方式的实例,对实验教学进行了以下探索.一、优化演示实验,提升观察能力演示实验是化学实验的一种重要方式.教师不仅要认真地做好每一个演示实验,而且要对书本上一些在实际中效果不明显的实验进行优化.优化可以从药品替代,仪器改良,设备改进
After the reform of the new curriculum, we have changed the way and concept of chemistry teaching, and many new teaching methods and modes have emerged, which have greatly improved classroom efficiency. However, there are still many problems in chemistry experiment teaching, such as “ Instead of students to do experiments ”“ play multimedia video experiment instead of experiment ”and other phenomena still exist.Experiment is the basis of chemistry, teachers should strive to use a variety of experimental methods to improve students multidimensional ability.Combined Chemistry "in the use of a variety of experimental examples of experimental teaching conducted the following exploration.One, optimize the demonstration experiment, to enhance the observation ability demonstration experiment is an important way of chemical experiments.Master not only must be careful to do a good job Demonstration experiments, but also to some of the books in the actual effect is not obvious experiment optimization.Optimization can be replaced from the drug, equipment improvements, equipment improvements