Research On Unit Teaching Design And Practice Of “sulfur And Its Compounds” From The Perspective Of Core Literacy Of Chemistry

In the new era,the purpose of chemistry curriculum reform in basic education is to develop students' core quality of chemistry and cultivate innovative talents.The traditional teaching design takes the class hour as the basic unit,presents the “fragmented” knowledge to the students,and ignores the integrity of the knowledge structure;Indoctrination teaching ignores the cultivation of students' ability and is not conducive to the development of students' core literacy of chemistry.The proposal of unit teaching design provides an effective way to effectively implement the core literacy of chemistry.In senior high school chemistry,the knowledge of elements and compounds plays an important role,but students often confuse the knowledge points in learning this part of the content.Unit teaching design can meet the requirements of learning element and compound knowledge,and then promote the implementation of chemistry core literacy in chemistry classroom.Therefore,taking the implementation of the core literacy of chemistry as the direction,this paper designs and constructs the framework of unit teaching design from the perspective of the core literacy of chemistry,uses this framework to design the unit teaching of sulfur and its compounds in elemental compounds,and applies it to practical teaching,and obtains good teaching results.The details are as follows:Firstly,through the collation and analysis of literature and books,this paper expounds the research status of chemistry core literacy,unit instructional design and instructional design based on chemistry core literacy,discusses the necessity and feasibility of unit instructional design from the perspective of chemistry core literacy,and defines relevant concepts;Secondly,based on constructivism theory,learning transfer theory and zone of proximal development theory,this paper designs and constructs the framework of unit teaching design from the perspective of chemistry core literacy,which includes five steps: determining unit teaching content,establishing unit teaching objectives,determining unit theme situation,planning unit teaching process and formulating unit teaching evaluation;According to the constructed framework of unit teaching design,the unit teaching design of sulfur and its compounds knowledge is carried out,and the teaching practice of four courses such as “sulfur and sulfur dioxide”,“sulfuric acid”,“test of sulfate ion” and “transformation of sulfur-containing substances with different valence” is carried out;Finally,the combination of formative evaluation and summative evaluation is used to analyze the practical effect of “sulfur and its compounds” unit from the perspective of core literacy of chemistry discipline.The results show that:(1)unit teaching design is more conducive to students' independent construction of knowledge structure system,high-quality completion of learning tasks,and the implementation of chemistry core literacy in chemistry classroom;(2)The unit teaching design oriented to the implementation of the core literacy of chemistry discipline is operable,in line with the modern educational concept,and can effectively improve the teaching quality.The unit teaching design from the perspective of chemistry core literacy has changed the traditional teaching methods,changed the students' learning methods,implemented the chemistry core literacy in the chemistry classroom,and then promoted the development of chemistry classroom teaching to high quality.