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所谓设计型实验,就是要求学生根据实验目的,运用学过的实验方法,自己设计一个新的实验方案.它要求学生设计实验原理,选择实验器材,安排实验步骤,设计数据处理的方法及分析实验误差.此类题主要考查学生是否理解实验原理和实验仪器的工作原理,是否具有灵活运用科研方法的能力,是否具有在不同情况下迁移知识的能力. 例1 设计一个测未知电阻R_x阻值的电路.给出的器材有:两个电压表V_1、 V_2(没有电流表),定值电阻R_0(已知阻值)、待测电阻R_x、开关S、电池组各一
The so-called design experiment is to require students to use their experimental methods and design a new experimental program according to the purpose of the experiment. It requires students to design experimental principles, select experimental equipment, arrange experimental procedures, design data processing methods, and analyze experiments. Errors. Such questions mainly examine whether students understand the principle of experimentation and the working principle of experimental instruments, whether they have the ability to flexibly use scientific research methods, and whether they have the ability to migrate knowledge in different situations. Example 1 Design a test to measure the resistance of unknown resistance R_x Circuit. The given equipment are: two voltmeters V_1, V_2 (without ammeter), fixed value resistor R_0 (known resistance), resistance to be measured R_x, switch S, battery each one