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示教板是教具中的重要品种,具有可见度大,操作方便等优点,是其它形式的教具难以取代的.过去的示教极(如五灯收音机),都存在着体积大、运输不便、用途单一、价格较贵等缺点.66年前北京教学仪器厂虽然设计了一套小形示教板,但又带来可见度降低的弊病.编制七八年教学仪器配备目录时,由于存在上述问题,就取消了示教板形式的教具,改为由教师自制.通过实践,实际上很多教师无暇或无力自制,因而影响了教学,几年来不断听到教师需要示教板的呼声.同
The teaching board is an important item in the teaching aids. It has the advantages of large visibility, easy operation, etc. It is difficult to replace other forms of teaching aids. The past teaching poles (such as the five-lamp radio) have large size, inconvenient transportation, and use. Single, relatively expensive and other disadvantages. 66 years ago, Beijing Teaching Instrument Factory designed a set of small-shaped teaching board, but it also brought the disadvantages of reduced visibility. When compiling the catalog of teaching equipment in 1978, due to the above problems, The teaching aids in the form of teaching boards were cancelled and replaced by teachers. Through practice, many teachers were innocent or incapable of self-control, thus affecting teaching. Over the past few years, teachers have repeatedly heard the need for teaching boards.