Research On The Application Of Performance Evaluation In The Exploratory Experimental Teaching Of Chemistry In Middle Schools

The chemical inquiry activity is a practical activity for chemical science interpretation and discovery,and applied creation.The chemical inquiry experiment class is an important position to improve students' core qualities of "scientific inquiry and innovation awareness".The 2017 edition of the high school chemistry curriculum standard advocates the development of effective daily learning evaluation based on the core literacy of the chemistry discipline in the "Teaching and Evaluation Suggestions".However,there are many problems in the high school chemistry experiment teaching in many areas,such as a single evaluation method,too much emphasis on the basic knowledge theory of chemistry experiment,and lack of attention to the experiment process.The performance evaluation of experimental inquiry is an evaluation method with disciplinary characteristics in the evaluation of chemistry.It can evaluate the preparation process,implementation process and results of experimental inquiry of students,so that students can clearly understand the evaluation criteria of the experiment before teaching activities and do it seriously.Every step of good experimental inquiry really becomes the master of learning.Therefore,it is necessary to study the application of expressive evaluation in middle school chemistry exploratory experimental teaching,in order to provide a reference for first-line teachers to use expressive evaluation in middle school chemistry exploratory experimental teaching.On the basis of collating and analyzing the current status of performance evaluation and chemical exploratory experimental research at home and abroad,the purpose,significance,methods and contents of the research are put forward,and the main direction of the research is determined.Then,taking the constructivist theory,multiple intelligence theory,and educational evaluation theory as the guidance,it summarizes the matters needing attention in the use of expressive evaluation in chemistry exploratory experimental teaching activities.Then the high school chemistry teachers and students' investigation and analysis of the middle school chemistry inquiry experiment teaching and performance evaluation are investigated and analyzed,and the inspiration for using the performance evaluation in the middle school chemistry inquiry experiment is obtained: comprehensive evaluation content,evaluation task contextualization,Open evaluation criteria and diversified evaluation subjects.After having the theoretical and practical basis,analyze the experimental content of the "Scientific Inquiry" column of the high school chemistry compulsory 1 of the 2007 People's Education Edition,combined with the core literacy development level of the chemistry discipline and the quality standard of chemistry,to define the performance of the high school chemistry exploration experiment The objective of the evaluation is to determine the content of the expressive evaluation of the high school chemistry exploratory experiment,to propose a method for designing the expressive task of the high school chemistry exploratory experiment,to formulate a chemical exploratory experiment rating scale based on expressive evaluation and to test reliability and validity,Design reverse teaching based on expressive evaluation.In order to test the feasibility and effectiveness of the above-mentioned content based on the performance evaluation of the chemical exploratory experimental rating scale,the two parallel classes of 1915 and 1916 in the first grade of Guangxi Yulin No.1 Middle School were taken as the research objects.Carried out a semester of chemistry exploratory experiment teaching practice research.Throughout the research process,questionnaire testing and after-class interviews were used to analyze the practical effects of using expressive evaluation in chemistry exploratory experimental teaching activities,focusing on(1)students 'interest and attitudes in learning chemistry experiments;(2)students' chemistry Experimental exploration ability,such as the students 'ability to ask questions and hypotheses,the ability to design experiments,the experimental hands-on ability,the ability to collect evidence,the ability to analyze,explain,and draw conclusions;(3)the awareness of students' cooperation and communication;Changes in four areas.Draw conclusions: Using performance evaluation in chemistry exploratory experimental teaching activities can improve students 'understanding of the significance and importance of chemistry experiments,inspire students' interest in learning chemistry experiments,the ability to ask questions and guess students,and design experiments The ability of the program,the ability to experiment,the ability to collect experimental phenomena and data,the ability to analyze and explain and draw conclusions,cooperation and communication awareness and the results of chemical experiments all have a certain positive impact.Due to the limitation of the research time,the object of the research,and the limited ability of the researchers,this research still has deficiencies,and the relevant research on the application of performance evaluation in the exploratory experiment of high school chemistry needs to be further developed and improved in the future.