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这件事已经过去了近两个星期,但是我却时时想起,感慨万千。5月6日下午第三节课,我带着五(3)班的学生来到科学实验室(二),学生异常的开心、兴奋,因为实验桌上摆放着的两盒矿物标本。在整节课中,学生学得很认真,观察得也很仔细,从矿物的颜色、透明度、光泽、硬度、形状的方面了解矿物的性质,知道了最硬的矿物是金刚石;最软的矿物是滑石;萤石是制造牙膏的重要原料;透明的石英称为水晶,是制造玻璃的重要原料……
This matter has passed nearly two weeks, but I always think of, filled with emotion. In the third class on the afternoon of May 6, I came to Science Lab II with five (3) students. Students were unusually happy and excited because of two boxes of mineral specimens on the experimental table. During the whole class, students learned very carefully and observed very carefully. Knowing the nature of minerals from the aspects of mineral color, transparency, gloss, hardness and shape, we know that the hardest mineral is diamond; the softest mineral Is talc; fluorite is an important raw material for making toothpaste; transparent quartz called crystal, is an important raw material for the manufacture of glass ... ...