A Case Study On The Development Of Students’ Chemical Experimental Thinking By Graphic Of Thinking Visualization

Since the reform of the new college entrance examination,the number of students who choose chemistry have gradually decreased,and the issues of how to improve students’ interest in chemistry and reduce their burden have become more serious.Chemical experiment is an important way to solve problems,but limited to the actual conditions,teachers and students appear "contempt" for chemical experiment,so that students’ chemical experiment thinking has been stagnant.Visualization of thinking is a very effective and mature tool,which is beneficial to the teaching of chemical experiments.Therefore,how to apply graphic of thinking visualization in chemical experiments to develop chemical experimental thinking is the core issue of this study.This paper adopts a combination of qualitative and quantitative research,and the process is divided into three parts: First,the chemical experimental thinking is divided into levels based on the SOLO classification theory,then I made the corresponding descriptive evaluation form of students’ drawing situation.Secondly,I used questionnaire and interviews to understand the current situation of chemical experimental thinking and the application of visual thinking diagrams among senior high students in the internship school.The survey found that the current situation of them need to be improved.Based on detailed questionnaire screening,careful observation and conversation with teachers and students during the internship,I could select suitable candidates with the learning motivation and psychological inclination needed in this study;Finally,4 people were selected as case objects,3 as experimental intervention objects and 1 as blank control;then I conducted comprehensive observation and data collectio in the experiment process,understood the development of students’ chemical experimental thinking through conversation.Based on the data of three main activity cases,I analyzed the composition of each student before and after class and all composition processes by vertical change analysis;then I obtained the level of chemical experimental thinking that students have reached in different periods.Through the research,We can find that in the teaching of chemistry experiment,three case subjects who have received the training and guidance of drawings have developed their thinkings to different degrees,and also stimulated their interests in learning chemistry and intention of applying the drawings.Compared with the blank control subjects,their changes are very obvious and greatly improved,and the effect of the whole study is nice.It proves that the research is effective.Therefore,educators can pay more attention to apply thinking visualization graphic in the teaching of chemical experiments,so that students can learn chemical experiments meaningfully and improve the level of thinking.At the same time,this research has made innovations in the research perspective,hoping to provide reference value for the visualization of chemical experimental thinking.