Research On Teaching Design And Practice Based On The Construction Of Classification View

According to the needs of students to adapt to modern life and future development,the first priority of curriculum reform is to implement core literacy.As an important part of the core literacy,the classification view is to classify substances and their changes according to different classification criteria to obtain the internal influence of chemical properties and changes,and to promote the understanding and application of chemical knowledge.The construction of the classification view is not accomplished overnight.It follows the general laws of cognitive development,from simple to complex,from concrete to abstract,and from low-level to high-level.Therefore,in the teaching process,teachers should consciously cultivate students' classification view based on students' knowledge,experience and cognitive development level.On the basis of consulting the existing literature,this article reviews the domestic and foreign research results on the basic concepts and classification of chemistry,defines related concepts,and summarizes the characteristics and value of the classification.Under the guidance of constructivism theory,meaningful learning theory,cognitive structure learning theory and other theories,the teaching content is determined by analyzing the compulsory high school chemistry 1 of the People's Education Edition and combining the requirements of curriculum standards.Supplemented by corresponding teaching strategies such as digging out typical materials,setting up driving issues,creating real situations,and timely summarizing and reflecting,etc.,the teaching practice based on the classification view is carried out,with "simple classification and its application","decentralized system and its application" "Classification","Redox reaction" and "Important iron compounds" are examples.In order to prove that the teaching based on the classification view has played a positive role in the cultivation of students' core literacy,this paper conducts a scientific analysis of the chemistry scores and self-edited test papers of the experimental class and the control class to test the teaching practice based on the classification view.Effectiveness.The conclusions of this paper are as follows:(1)Teaching based on the classification view can help students clarify the differences and connections between concepts and principles,thereby establishing a knowledge network system.(2)Teaching based on the classification view,creating real problem situations,guiding students to think and explore independently,promoting students' knowledge transfer and application,and improving students' ability to analyze and solve problems.(3)Teaching based on the classification view has promoted the transformation of students' learning styles,from passive acceptance learning to active inquiry learning,improving learning efficiency and deepening the understanding of the nature of knowledge,which is conducive to the formation of students' core literacy.