小学自然教学中,我曾利用废弃包装泡沫硬塑帮助指导学生进行实验小制作。发觉这是一种易于造型、便于固定、容易上色的极好实验制作材料。现将有关方法介绍如下: 1.设计、切割。根据实验制作品的要求,先在泡沫硬塑上设计画线,分出所需的块状样式,然后切割分离。切割效果最好的方法是电阻丝切割(具体见后面的说明)。这种方法切割速度 In primary school nature teaching, I used the waste plastic foam to help guide the students to make small experiments. Found that this is an easy to shape, easy to fix, easy to color excellent experimental production of materials. Now the method described below: 1. Design, cutting. According to the requirements of experimental products, first design the drawing on the foam plastic to separate the desired block style, then cut and separated. The best way to cut is resistance wire cutting (see later for details). This method of cutting speed