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鄂教版自然教材《滑梯的科学》一课,主要是研究滑梯坡度的大小与物体下滑速度、滑出坡面后冲出的距离之间的关系,从而让学生初步了解滑梯的坡度既不能太小又不能太大。教材上介绍的实验是:用直尺和几本厚书分别搭几个不同坡度的斜坡,让小盒子分别从斜坡顶端滑下。但实验时,小盒子(或小木块)不容易沿直尺下滑,多数情况会从顶端或中间掉下来,致使实验失败。为了更直
The E-text version of the textbook, “The Science of Slide,” is a study of the relationship between the size of a sloping slope and the falling speed of an object and the distance that slipped out of a sloping surface so as to enable students to gain an understanding of the slope of a slide neither too Small and not too big. The experiment introduced in the textbook is to use several straight ramps and several thick books to take several slopes of different slopes respectively so that the small boxes slide down from the top of the slope respectively. However, the experiment, the small box (or small pieces of wood) is not easy to slide along the ruler, in most cases will fall from the top or middle, resulting in experimental failure. To be more straightforward