Teaching Design And Practice Research On The Core Concept Of Redox Reaction In Middle School Chemistry Based On Advanced Learning Theory

In July 2011,the United States put forward a new framework,which emphasizes the core concept as the carrier,and the discipline system of core concept is dominated by the way of advanced learning.Since the implementation of curriculum reform in China,many experts have been studying how to connect scientific knowledge,rather than make each concept exist independently.Inspired by the new framework of the United States,many educators in many countries have taken learning advancement as a clue throughout the whole learning stage of primary and secondary schools,In different stages,different learning motivation should be defined to realize the connection of related knowledge effectively.With the continuous research,people pay more attention to the establishment,understanding and application process of core concepts,and advanced learning can better build steps,gradually master scientific concepts,and gradually form a systematic and in-depth knowledge system.This paper mainly consists of six parts: introduction,review of core concepts and advanced learning,formation of knowledge system of redox reaction,construction of advanced learning model of redox reaction,teaching design and conclusion of redox reaction under different advanced levels.The purpose of this study is to carry out the teaching design and real-line research of the core concept of "oxidation-reduction reaction" under the guidance of advanced learning theory and the core concept teaching design.According to the requirements of chemistry curriculum standards and teaching materials,using the methods of literature review,questionnaire survey and interview,this paper makes a hypothesis about the expected progress of students,interviews senior one chemistry teachers about the progress of learning,and pre-test the students who have just been promoted to senior one.According to the results of interviews and pre-test results,the model of "redox reaction" advanced learning elements is established,It is divided into five stages:experience,mapping,association,system and integration.Integrating the concepts related to redox reaction in high school chemistry,drawing the overall concept map,understanding the relationship between the various sub concepts of redox reaction in middle school,can form a certain cognitive structure in the mind,master the knowledge system of redox reaction.According to the actual development of students,the teaching design of the core concept of redox reaction is divided into five periods,It includes "teaching design of redox reaction under experience level","teaching design of redox reaction under mapping level","teaching design of redox reaction under correlation level","teaching design of redox reaction under system level" and "teaching design of redox reaction under integration level".This part of the teaching design adopts the way of advanced learning to transfer teaching knowledge,constantly improve the cognitive structure,so as to build up the knowledge system of redox reaction in his mind.After five advanced levels of teaching,students' thinking development is also from low level to high level.After class interviews with students,it is found that most students have reached the relevance level and system level,and a few have reached the final level,indicating that it is very difficult to achieve the end goal level.Based on the advanced learning theory,this study designs and implements the teaching of the core concept of redox reaction,which enables students to master scientific concepts step by step,gradually form a systematic and in-depth knowledge system,and realize the series connection of relevant knowledge,which has a positive significance in students' learning,teachers' Teaching and teaching evaluation.Teachers attach importance to concept teaching,integrate advanced learning with subject knowledge,strengthen the connection between advanced learning and concept teaching,and deepen the core concept of redox reaction.In teaching,we can provide a variety of evaluation methods,real-time care about students' development and development level,understand students' cognitive level of concept understanding,and make accurate evaluation on students' learning performance.There are still many deficiencies in the research of this topic,such as the research content is not extensive enough,the investigation and interview of students is not strong enough,and the teaching evaluation and reflection summary is too general.I hope that we can correct and make up in the future work process,and carry out educational research and practice from the perspective of all-round development.It is expected that in the future development,we can deepen the research on advanced learning and form the advanced learning with national characteristics.The integration of advanced learning and knowledge content of various disciplines is the focus of the development of education at this stage.It is hoped that more educators will join in the research of advanced learning.