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【知识建构】每年高考阅卷时,总发现不少同学在做实验设计题时,往往因答题不规范,表达不严密、不完整等失分严重。下面谈谈实验设计题中答题规范和注重细节的一些问题。一、注重实验原则,强化步骤规范1.对照原则和单一变量原则设计实验时,一定要注重两个重要的原则:对照原则和单一变量原则。常见的对照原则有空白对照、自身对照、条件对照和相互对照。
Knowledge Construction] Every year when the college entrance examination marking, the total number of students found that when the experimental design questions, often due to the problem is not standardized, the expression is not rigorous, incomplete and other serious loss of credit. Here to talk about the experimental design questions in the questions and attention to detail the details of some of the issues. First, pay attention to the principle of experiment, step-by-step specification 1. The principle of comparison and single variable design experiment, we must pay attention to two important principles: the principle of comparison and single variable. Common control principles are blank control, self-control, conditional control and mutual control.