Teaching Design And Practice Of High School Chemistry Based On ATDE ——Taking "Ionization Of Water And PH Of Solution" And "Hydrolysis Of Salts" As Examples

At present,the new curriculum reform emphasizes quality education and strengthens the cultivation of students' comprehensive quality.Chemistry curriculum standards emphasize “literacy-based” teaching.The ATDE teaching model is based on students' knowledge and experience,and teachers flexibly use the four links of asking,thinking,doing and evaluating in a supportive environment to stimulate and enhance students' interest in learning and improve students' abilities.Taking “ionization of water and p H of solution” and “hydrolysis of salts” as an example,the teaching design and practice based on the ATDE teaching model aims to enhance students' interest in learning chemistry and promote the improvement of students' core literacy in chemistry disciplines.In this paper,the literature research method,the survey method and the classroom observation method are mainly used for research.Based on the ATDE teaching mode,the teaching design and practice are carried out by selecting “ionization of water and p H of Solution” and“hydrolysis of salt” in chapter 3 of Chemical Reaction and Principles,compulsory course 1 of High school Chemistry published by People's Education Press in 2019.In the design,first of all,the requirements of the curriculum standard,the content of the teaching material and the learning situation are analyzed,and the teaching objectives and evaluation objectives are clarified.Then,the teaching content is combined with the four links of ATDE teaching mode to form a specific teaching process.Before the practice,students' learning in chemistry subject was investigated by questionnaire survey,and teachers in school were interviewed to understand their views and suggestions on optimizing classroom teaching effect.After the practice,interviews with students found that students were more interested in learning chemistry and had a stronger ability to absorb new knowledge in class.Finally,the students were tested,mainly to investigate their comprehensive application ability of chemical knowledge.It was found that the average score of the experimental class was 5 points higher than that of the control class,which had a more obvious effect on the students in the middle.Students in the experimental class have better comprehensive application ability of chemical knowledge than those in the control class,mainly in experimental error analysis,flow charts and images.Based on the ATDE teaching model,from the students' interest in learning chemistry,the observation of the classroom and the analysis of students' achievements,the following conclusions can be drawn:(1)Teaching based on the ATDE teaching model can strengthen the main position of students' learning and improve students' interest in learning chemistry.(2)Teachers teach based on the ATDE model,and the teaching methods are more abundant,which can effectively improve the teaching effect.(3)Students can better grasp and apply the knowledge they have learned,and improve the core literacy of chemistry disciplines.