论文部分内容阅读
对照是实验设计的基本准则,通过设置实验对照,可排除无关变量的影响,增加实验结果的可信度和说服力.对照可分为空白对照、条件对照、相互对照、自身对照等多种类型,此种分类固然正确,但显得过于理论化,可操作性不强,学生较难掌握.其实,根据实验是否分组及分组数,可把对照分为不分组对照、分两组对照和分多组对照三种类型.下面对此种分类进行介绍,以期给高考实验教学提供思维方法上的参考.1.不分组对照不分组不意味着不对照,一般是实验前后进行自身对照,
Control is the basic principle of experimental design, by setting the experimental control, you can rule out the influence of unrelated variables, increase the credibility and persuasion of experimental results.Control can be divided into blank control, conditional control, mutual control, self-control and other types In fact, according to whether the experimental grouping and grouping, the control can be divided into groups without control, divided into two groups of control and points and more Group control three types.The following describes the classification, with a view to providing experimental teaching of college entrance examination thinking methodological reference .1 not divided into groups does not mean that the control does not control, usually before and after the experiment itself,