Research On Teaching Practice Of The Digital Experiment In The Chemical Reaction Principle Module

Chemistry is a subject based on experiments,which is irreplaceable for the study of chemical knowledge.The principle of the chemical reaction is an important part of high school chemistry knowledge,and also the key and difficult point of high school chemistry learning.Under the background of the new curriculum reform,how to use new technology to help students simplify the experiment process,shorten the experiment time and promote knowledge mastery.This study takes digital experiment as the main experimental means and combines digital experiment with chemical reaction principle knowledge in the background of educational information.Through designing digital experimental cases of primary knowledge and carrying out teaching practice of digital experimental cases of chemical reaction primary knowledge,this paper explores whether digital experimental teaching can promote students to learn chemical primary knowledge.Firstly,the paper analyzes the demand for chemistry subjects for a digital experiment under the new curriculum standard,and combs and analyzes the research status of the digital experiment and the digital research status of primary knowledge at home and abroad.Secondly,it analyzes constructivism theory,TQVC cognitive theory,and quadruple representation theory.Then,through the analysis of the chemical experiments involved in the principle module of chemical reaction,five subjects,including "neutralization heat determination","factors affecting the rate of chemical reaction","salt hydrolysis",and "precipitation solution equilibrium" and "galvanic cell".The use of digital technology to carry out chemical experiments,and digital experimental case teaching practice research.The teaching effects of the classes using traditional experimental methods and digital experimental methods were tested respectively.It is found that the combination of digital technology and chemical principle experiment can stimulate students' interest in learning and enhance their experimental inquiry ability and image analysis and processing ability.It is of great help for students to master the knowledge of abstraction and also provides a certain reference for the teaching of chemical reaction principles.