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高考实验题本着来源于教材而不拘泥于教材的原则,通过各种变换后呈现给学生。所以,教师可在课堂中对现有实验进行些变换创新,以此为契机,发散学生的思维,培养其实验能力,进而形成创新意识。下面笔者就以测量玻璃的折射率为例做些变换。此实验原理在教材上采用的是插针法,器材有:玻璃砖、白纸、木板、图钉、大头针、刻度尺、量角器、铅笔等,光路原理如
Entrance exam questions based on the principle of teaching materials without rigidly adhere to the textbooks, through a variety of changes presented to the students. Therefore, teachers can make some changes and innovations in the existing experiments in the classroom as an opportunity to divert the students’ thinking and develop their experimental ability, thus forming a sense of innovation. The following author to measure the refractive index of glass to do some transformation. The principle of this experiment in the textbook is the pin method, equipment: glass brick, white paper, wood, thumbtacks, pins, scale ruler, protractor, pencil, light path principle such as