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“自然”第一册第十课“热胀冷缩”,是继“怎样认识物体”——水和空气之后的又一类实验课,本课前一部分由教师扮演小林进行演示实验,后一部分还有学生自己设计实验的内容。
The tenth volume of “Nature” Volume I, “Expansion and contraction,” is another type of experimental class after “How to recognize objects” - water and air. The first part of this lesson is played by teachers as Kobayashi demonstration experiments. The latter part There are students to design the experiment content.