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教学内容: 商不变的性质,第七册第二章第二节第一教时。教学目标: 1.知道“乘以几”也可以说是“扩大几倍”、“除以几”也可以说是“缩小几倍”。 2.能从实际事例中归纳出商不变的性质,能说出在商不变的性质中“同时扩大”、“同时缩小”、“相同倍数”等含义。并由此初步懂得透过事物的现象看到其本质的道理。 3.记住商不变的性质,能运用商不变的性质,判
Teaching Content: The Unchangeable Nature of Business, Volume II, Chapter Two, Section Two, First Teach Hour. Teaching Objectives: 1. Know “multiplied by a few” can also be said to “expand several times”, “divided by a few” can also be said to be “reduced by several times.” 2. We can sum up the invariable nature of business from the practical examples, and we can say the meanings of “simultaneous expansion,” “simultaneous reduction,” and “same multiple” in the nature of the firm. And thus initially understand the phenomenon of things through to see the essence of its truth. 3. Remember that the invariable nature of business, can use the same nature of business, sentenced