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实验是在自然学科的教学中最常用、最重要的教学方法之一。通过实验不仅可以提供学生对所学习的自然现象的感性认识,而且可以使学生获得初步的实验技能和观察分析问题的能力。可是往往在实验过程中实验现象不够明显,即实验的可见度低,导致学生不能清晰地观察实验现象,从而正确分析,获得科学的结论。笔者认为可以从以下四个方面着手,提高实验的可见度。
Experiment is one of the most common and important teaching methods in the teaching of natural science. Experiments not only provide students with perceptual knowledge of natural phenomena they learn, but also enable students to gain initial experimental skills and observe and analyze problems. However, the experimental phenomenon is often not obvious in the experiment, that is, the low visibility of the experiment, resulting in students can not clearly observe the experimental phenomena, so as to correctly analyze and obtain scientific conclusions. I think we can start from the following four aspects to improve the visibility of the experiment.