Analysis And Strategy Research On Difficulties In Learning "Ion Reaction And Balance In Aqueous Solution" In Senior High School Chemistry

As an important method of talent selection today,the college entrance examination has been widely concerned by the society.With the advancement of the new college entrance examination system,chemistry subjects still occupy an important position.However,in the chemistry study of the second year of high school,due to the messy and complex content of the "Ion Reaction and Balance in Aqueous Solution" module,many students' knowledge mastery,method application and problem-solving ability can't reach the quality of chemistry studies standard.When students encounter learning difficulties,they will choose to escape,which leads to lower and lower interest in learning,and the learning effect is also unsatisfactory.Therefore,in the process of teaching this module,identifying students' learning difficulties and thinking about how to break through learning difficulties is an important way to solve problems,which can not only guide students to learn how to solve problems,but also improve their core chemistry qualities.Sort out relevant literature and theories to define concepts,use textbooks,"General High School Chemistry Curriculum Standards(2017 Edition)" and tutorial books as references to establish a knowledge system,then analyze the knowledge,methods and skills that students need to learn,and prepare student questionnaires,test papers,and teacher interview outlines to implement surveys.Use software SPSS26.0 and Excel to perform data statistics,use SOLO classification theory to analyze test papers,and explore students' difficult learning problems from a deeper level.Based on the in-depth analysis of the difficulties of high school students in this module,the reasons for the difficulties are summarized from the three aspects of students,teachers and knowledge content: firstly,from the perspective of knowledge content,the basic concepts of this module are difficult to understand and the examination methods are diverse;secondly,from the teacher's point of view,there is a lack of interest in teaching and lack of objective teaching evaluation in the classroom;finally,from the student's point of view,the reasons for students' difficulties mainly include the weakness of relevant basic knowledge,the lack of abilities such as mathematical operations,experimental investigation,information integration and comparative induction,the negative effect of mindset,the influence of non-cognitive factors,and the inefficiency of learning methods.Summarizing the causes of the above learning difficulties,combining relevant literature review and teacher interviews,and then propose strategies to solve the ionic reaction in the aqueous solution and the learning difficulties in balance include: first,adhere to a step-by-step approach,attach importance to concept teaching and the construction of knowledge systems,and consolidate basic knowledge;second,follow the combination of lectures and exercises,and guide students in the classroom to improve the training of mathematical operations,experimental exploration,information integration and comparative induction;third,use chemical materials to penetrate thinking and use mind maps to improve their thinking ability;finally,summarize the problem-solving methods,pay attention to habit formation,promote the development of non-cognitive factors,and pay attention to teaching methods and objective evaluation methods in the teaching process.