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模拟实验作为科学研究中的一种常用方法,在科学探究中越来越受到人们的重视。在小学科学课教学中,有时由于受到客观条件限制,不能就某种自然现象做实验时,就要借助模型来做实验,然后再把模拟实验的现象和结果进行迁移扩展,进而揭示要研究的自然现象的本质,达到认识自然现象的目的。一、岩石会改变模样吗在新教科版五年级科学上册“岩石会改变模样吗”一课的教学时,学生认为,岩石都是很坚硬的,是不容易发生变化的。但自然界的许多事实和现象告诉我们,坚硬的岩石也会发生变化。是什么原因使它们发生变化的呢?为了帮助学生认识冷和热对岩石的破坏作用,笔者和学生一起做了一个模拟实验:用
As a commonly used method in scientific research, simulation experiments have drawn more and more attention in scientific inquiry. In elementary school science teaching, sometimes due to the objective conditions, can not experiment with a natural phenomenon, it is necessary to use the model to do the experiment, and then the phenomenon of simulated experiments and the results of the migration and expansion, revealing the need to study The nature of the natural phenomenon, to achieve the purpose of understanding the natural phenomenon. First, the rock will change the appearance of the new textbook in the fifth grade science book “Rock will change the appearance of you ” a class of teaching, students believe that the rock is very hard, is not easy to change. However, many facts and phenomena in nature tell us that hard rocks will change as well. What makes them change? In order to help students understand the destructive effects of cold and heat on the rock, the author and the students together to do a simulation experiment: