当前,中小学理科教师都很重视实验。开展实验教学,最大的困难在于教学仪器缺乏。依靠国家配发,需要等待一个相当长的时间,远水解不得近渴。从我县情况看,要把16所高中、250所初中和540多所小学的教学仪器配齐,达到每个演示、每个分组实验都能进行的程度,按目前下拨的仪器费,要30多年才能解决。因此,既不能等,也不能靠,必须自力更生,努力自制教具仪器。但是,在几年来自制教具活动中出现了一些问题。其一,教师教学任务重,课外要备课、批改作业、辅导、还要搞家访,很难挤出时间;其二,受原材料限制,多数教具不能制作;其三,一些 At present, primary and secondary science teachers attach great importance to the experiment. To carry out experimental teaching, the biggest difficulty lies in the lack of teaching equipment. Relying on the state allotment, need to wait for a long time, far from hydrolysis can not be thirsty. From the situation in our county, it is necessary to match the teaching instruments of 16 high schools, 250 junior high schools and 540 primary schools to the extent that each demonstration and experiment can be carried out in each group, according to the current instrumentation fee allocated More than 30 years to solve. Therefore, we can neither wait, nor rely on ourselves. We must work hard to make our own teaching aids. However, a few problems arose during the years of self-made teaching aids. First, the task of teaching teachers heavy, extracurricular to prepare classes, correcting homework, counseling, but also engage in home visits, it is difficult to squeeze out the time; Second, subject to raw materials, most of the teaching aids can not be produced; Third, some