当前,在化学教学改革中,许多教师竭力从实验教学入手,尽管增加了学生实验数量,但效果不见得好,因为学生自主实验的能力还是不如人意。例如,在实验会考前、高考前或是期末考前的实验复习,常见到有些学生早把以前做过的实验淡忘了,甚至连实验装置也装不起来了。原因何在?因为在以往的实验中,有现成的实验手册,教师做示范 At present, in the reform of chemistry teaching, many teachers try their best to start from experimental teaching. Although the number of students’ experiments has increased, the effect is not good, because the ability of students to independently experiment is still not satisfactory. For example, before the experimental exam, before the college entrance examination, or before the final exam, it is common for some students to forget about the experiments they had done before, and even the experimental devices cannot be installed. What is the reason? Because in past experiments, there are ready-made experimental manuals for teachers to demonstrate.