Research On Teaching Practice Of Chemistry Concept In High School Based On APOS Theory

The concept of chemistry is the basic point of chemistry study,and it plays a key role in the understanding of chemistry subject and the formation of subject concept.In order to give full play to the role of chemistry concepts,combined with the actual situation,the application of APOS theory in the teaching of chemistry concepts has a theoretical guiding role,providing a new idea for the classroom teaching of chemistry concepts.APOS theory is an abbreviation of Action,Process,Object and Schemas.APOS theory is integrated into the teaching of chemistry concepts,which can provide theoretical basis and guidance for concept teaching.The APOS theory shows that if you want to have a thorough understanding of abstract concepts,you need to go through various thinking activities and teaching entity activities to have a cognitive process of perception of chemical concepts,and then integrate the cognitive processes to obtain preliminary chemical concept objects Finally,the activities,operation processes,objects and original related knowledge are integrated and refined to obtain a knowledge model.In this process,students can truly understand the concept of "source" and essential connotation.First of all,the research of this thesis is based on consulting relevant literature,and sorting out and reviewing the research status of APOS theory and high school chemistry concepts at home and abroad.Significance,the ideas expressed in APOS theory are consistent with the new curriculum reform ideas,and it is also the way that teachers and students expect the teaching and learning of chemistry concepts.However,there are still some problems in the conventional chemistry concept teaching.In order to understand the current status of chemistry concept teaching and learning,the questionnaires and interviews are conducted to investigate the situation of teachers and students in teaching and learning.The problems in concept teaching provide a factual basis for the teaching design and practice of chemistry concepts guided by APOS theory.Secondly,combining the characteristics and existing problems of the chemistry concept,the teaching design and practice of "ionization of acid,alkali and salt in aqueous solution","ion reaction" and "redox reaction" in combination with the APOStheory,respectively,by pre-testing students Contrast analysis with post-test results to verify the feasibility and practical effect of APOS theory-guided chemistry concept teachingFinally,the conclusion of the research is drawn and the teaching suggestions of the chemistry concept guided by the APOS theory are put forward: give full play to the dual role of the APOS theory in the teaching of chemistry concepts;use the APOS theory as a guide to promote the comprehensive development of students;combine the APOS theory with the teaching content Integration in order to provide a reference for the teaching of high school chemistry concepts.