化学试验的测试 ,就目前来说 ,还只能设计成试题在卷面上进行 ,这类试题中有相当一部分是实验装置方面的问题。教学中 ,特别是初三、高三复习时 ,教师在黑板上画图 ,既费时又不规范。所以用铁皮、小磁铁、细铁丝做成的化学实验装置活动演示板 ,既能在平常教学中演示实验的规范 The test of chemical tests, for the time being, can only be designed into test questions on the surface of the paper. A considerable part of these test questions are problems with experimental devices. In teaching, especially in the third and third grades, teachers draw on the blackboard, which is both time-consuming and non-standard. Therefore, the use of metal sheets, small magnets, and fine iron wire as the demonstration board for chemical experiment devices can not only demonstrate the specifications of experiments in ordinary teaching.