High School Chemistry Students Must Do Experimental Design And Teaching Research Based On Handheld Technology

Senior high school chemistry students have to do experiments with various types of experiments,which can enable students to learn comprehensively.Some of the experiments involved knowledge points are puzzling and difficult for students to understand.Handheld technology uses sensors and data acquisition devices to characterize the abstract and difficult process in the experiments with curves and graphs,constantly observe the results of the experiments,and analyze the curves and graphs to return.To sum up is helpful to help students overcome the difficulties in the learning process.After the analysis of the compulsory experiment for students proposed in the new curriculum standard,this paper expounds the design idea of using hand-held technology in the compulsory experiment.Combining with the past cases of developing the compulsory experiment by using hand-held technology,this paper improves the compulsory experiment,aiming at improving the compulsory experiment teaching cases for students based on hand-held technology.This paper is divided into five parts.Firstly,it summarizes the research,research methods,research ideas,basic concepts and research status of the paper.Secondly,the value of using handheld technology in students' compulsory experiments is analyzed,the content of students' compulsory experiments is analyzed,and the value of using handheld technology in students' compulsory experiments is defined.Next,the type of experiment and the purpose of experiment are analyzed,and the design idea of the experiment that students must do based on handheld technology is expounded.A case study of the experiment of chemical concepts and principles is developed.Four experiments have been developed and improved.Four experiments have been innovated to varying degrees.They are "the progressive experiment of the same periodic element nature" and "the factual influence factors of chemical reaction rate".The improved experiments are more effective than the traditional ones in the experiments of influence factors of chemical equilibrium shift and neutralization titration of strong acid and alkali.This paper carries out the teaching practice of the compulsory experiment for students based on handheld technology-"the experiment of influencing factors of chemical balance movement",evaluates the effect,chooses a high school science class in Zhengzhou as the implementation object,presents the implementation process,interviews students and teachers after class,and analyses the implementation results.Finally,the research results are summarized and the shortcomings in the research are reflected.For example,due to the limitation of the conditions in the practice stage,only a part of the students have to do experiments to develop and improve.Only one experimental case has been selected to teach.The study of the influence of the application of hand-held technology in experimental teaching on students still needs to be carried out for a long time,and the students based on hand-held technology must do experiments.The future of improvement is prospected.The research draws the following conclusions:(1)Analyses the value of handheld technology used in students' required experiments,and provides a reference method for the future application of handheld technology in students' required experiments.(2)The design idea is constructed,which is conducive to the future development of compulsory experiments for students using hand-held technology.(3)A compulsory experiment teaching case for senior high school chemistry students based on handheld technology was developed.Four cases were innovative to a certain extent,which could provide some guidance for teachers' teaching and students' learning.(4)The experiment teaching practice based on hand-held technology is carried out,which proves that the application of hand-held technology in teaching can promote students' learning to a certain extent.In this paper,literature research,experimental research,action research,interviews and other research methods are used.