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利用幻灯教学,讲究投影方法,对提高教学效果具有重要意义。几年来,我们在小学数学教学实践中不断探索,总结出十种投影方法。下面就这些方法作简要介绍。一、代示法代示法是一种利用幻灯投影代替板书、板图的方法。此法适用于板书量较大、图象较复杂或图象较多的情况。一般来说,低年级教材中图象较多,往往一节课需要用好几幅;而中、高年级教材中图象比较复杂,有时
The use of slide teaching, pay attention to the projection method, to improve teaching effectiveness is of great significance. Over the past few years, we continue to explore the practice of primary school mathematics teaching, summed up ten kinds of projection methods. Here’s a brief introduction to these methods. First, the method of representation The method of representation is a way to use slide projection instead of a board, board map. This method is suitable for large amount of board, the image is more complex or more images. Generally speaking, there are many images in the lower grade textbooks, and a few paragraphs are often needed in one lesson. However, the images in middle and senior grade textbooks are quite complicated, sometimes