Research On Teaching Practice Of Digital Experiment Under The Core Literacy Of "macro Identification And Micro Exploration"

In recent years,core literacy has become an important basis and guidance for education reform and curriculum design in many countries.With the new round of "General High School Chemistry Curriculum Standard(2017 Edition,2020 Revision)"(hereinafter referred to as the "New Curriculum Standard")issued and the official implementation of the new teaching material of 2019 Education Edition,it is further clarified that the chemical core literacy is composed of "macro identification and micro analysis" and made a detailed interpretation of it.Among them,"macro identification and micro analysis" is one of the qualities with the most characteristics of chemistry.At the same time,the core quality also reflects the thinking mode and thinking method of chemistry.First,this paper carried on the basic theory research through the literature analysis method,and carried on the practice investigation to the student's cultivation status through the questionnaire survey method and the interview method on the basis of the existing research.Second,the exploration activities in the selective compulsory textbook Principle of Chemical Reaction of 2019 education Edition are designed as digital experiments,combined with three experimental cases of "simple electroplating experiment","Titration of Sodium carbonate with Hydrochloric acid" and "dilution of Na OH and ammonia" combined with the core literacy of "macro identification and micro analysis".According to existing cognitive experience of students,the specific experimental results are analyzed from the macro level,and the new micro level is modeled from the perspective of combining qualitative analysis and quantitative research,trying to penetrate the discipline core literacy of "macro identification and micro analysis" from the perspective of digital experiment.Finally,it is conducive to the teaching practice of empirical research method.Through the design and implementation of teaching cases,paired sample test is carried out from the four dimensions of core literacy divided into "macro identification and micro analysis",and the results show that the post-test scores are higher than the pre-test scores,and there is a significant correlation between the two(P<0.05).From theory to practice,from the teacher's "teaching" and the student's "learning" two aspects to promote the reconstruction of knowledge.This paper draws the following three conclusions:(1)Take digital experiment as the carrier,infiltrate the thought of "macro and micro combination" into it,enrich and develop students' "quadruple representation" thinking model.(2)The application of qualitative and quantitative scientific research methods based on digital experiments can help students form scientific and rigorous internal logic.(3)The classroom practice of digital experiment is conducive to the improvement of students' grades and the development of the core quality of "macro identification and micro analysis".To a certain extent,this paper has enriched the practical research of digital experiments and "macro identification and micro analysis" cultivation of core literacy,in order to provide reference for teachers to promote the development of students' core literacy.