Modeling Teaching Based On The Core Literacy Of Chemistry Practical Research ——Taking Chemical Equilibrium As An Example

My country's newly promulgated "Chemistry Curriculum Standard for General High Schools(2017 Edition,2020 Revision)"(hereinafter referred to as the new curriculum standard)focuses on developing students' core literacy of chemistry,and hopes that after receiving education,students can gradually form the necessary skills to adapt to social development.Ability and quality,and "modeling and modeling" are mentioned many times in the core literacy of chemistry.Under such a reform background,implementing models and modeling into actual teaching is a way of cultivating students' model cognition and modeling.important means of competence.Therefore,it is imperative to incorporate modeling and models into the chemistry classroom.On the basis of a large number of literature research,this paper conducts a survey and statistical analysis of the current situation of high school chemistry modeling teaching based on the core literacy of chemistry for teachers and students of a middle school in Hanzhong City,and provides a reference for the follow-up modeling teaching practice.Based on this,on the basis of analyzing the content of chemical balance and students' learning difficulties,this paper combines the characteristics of modeling teaching,integrates relevant education and teaching theories,and proposes corresponding modeling teaching strategies.The modeling teaching strategies are used to design teaching cases and develop Teaching practice,taking two classes of the same level in a middle school in Hanzhong as the research object,by comparing the modeling thinking level and the change of performance of the practical objects to explore the research effect,and provide the front-line chemistry teachers with reference modeling teaching strategies with the case.Based on the above conclusions:(1)The current situation of modeling teaching based on the core literacy of chemistry is not optimistic through interviews.It is found through questionnaires that students' chemical models and modeling ideas have not been popularized,and modeling knowledge is generally lacking.The awareness of using modeling in the learning process is weak.(2)Through modeling teaching practice,it is found that modeling teaching based on the core literacy of chemistry is conducive to improving students' academic performance,because modeling teaching can stimulate students' interest in learning and fully let students be the masters of the classroom.Problem situations,interesting experiments,multiple representations,etc.,arouse the enthusiasm of students.(3)In addition,it is also found that the teaching of chemical modeling based on the core literacy of chemistry is helpful to promote the development of students' model thinking.The purpose of modeling teaching is to construct complex and abstract knowledge into chemical models,and to encourage students to use the models to solve practical problems and derive new theoretical knowledge.(4)Finally,through the evaluation,it is found that the teaching in this mode is helpful to cultivate students' core literacy of chemistry.The design concept of modeling teaching is based on the "core literacy" as the guiding ideology,infiltrating and running through the "core literacy" into the process of teaching design,using knowledge as the carrier to form basic subject cognition,subject thinking and subject skills.Student Sustainability.