教科书对我们学生来说是再熟悉不过的了。如果仔细观察和思考,就会提出一些问题:什么材质的教科书经济性比较好?教科书常常没有用坏就被舍弃了,怎样提高它们的利用率?这对许多未脱贫地区的学生来说是很有意义的。为此我们把它作为研究性学习的一个小课题,做了如下的调查和初步分析。 首先,我们对北京地区正在使用的初二年级的课本的价格、质量等进行了调查,得到了一些有关数据,如表1。 Textbooks are familiar to our students. If we observe and think carefully, we will raise some questions: What textbooks are better for materials? Textbooks are often discarded without being used. How to increase their utilization rate? This is very good for many students who are not out of poverty. meaningful. For this reason, we used it as a small topic for research learning and made the following investigation and preliminary analysis. First of all, we investigated the prices and quality of textbooks used in the first and second grades in Beijing and obtained some relevant data, as shown in Table 1.