Improving The Effect Of Biology Classroom Teaching In Junior High School Based On The Analysis Of Test Papers On Big Data Platform

With the rapid development of science and technology in the 21st century,mankind has entered the era of big data.This is an opportunity and a challenge for current school education.A large amount of educational data has been obtained in teaching activities.Educational information shown by educational data can prompt teachers to improve teaching and mobilize students' learning initiative.The test paper analysis report based on the big data platform shows a large amount of educational information.The Middle School where the author's internship uses the Ruiya Examination Service Cloud Platform for test paper analysis.At present,this big data platform has been fully covered in all primary and secondary schools in Xinzheng City,Henan ProvinceThe author surveyed 107 front-line biology teachers in Xinzheng City,Henan Province to investigate the application status of Ruiya Examination Service Cloud Platform test paper analysis data in junior high school biology classroom teaching.After investigation,it was found that:(1)95%of teachers believe that using the big data platform for analysis of test papers has a significant advantage over traditional manual methods for test paper analysis.(2)98%of teachers often only pay attention to the apparent information such as the highest score,the lowest score,and the average score in the test paper analysis report generated by the big data platform,while ignoring that the valuable information that can serve the teaching,such as the knowledge point distribution of the test questions and the difficulty value of the test questions.(3)Teachers generally agree that the test paper analysis report generated by the big data platform is meaningful for classroom teaching,but many front-line teachers lack the consciousness of applying the data in the test paper analysis report to classroom teaching to promote teaching efficiency or the use of the data in the test paper analysis report to promote teaching specific practicesBased on the current situation survey,the author selected 41300 big data analysis reports of the first volume of biology final examination papers of grade 7 in Xinzheng City,Henan Province in the three years from 2017 to 2019 as the analysis samples.Based on the comparison and analysis of the data in the three-year paper analysis report,the author reached the following conclusions:(1)In the recent three years,there are three common knowledge sections in the seventh grade biology final examination of Xinzheng City,Henan Province,including "Biology and Biosphere","Structure Levels of Organisms" and "Green Plants in the Biosphere",sort the three knowledge sections according to the importance of the survey:"Green Plants in the Biosphere">"Structure Levels of Organisms">"Biology and Biosphere",in the knowledge plates of "Biology and Biosphere" and "Structure Levels of Organisms",there was no significant difference in the scores of multiple choice questions and non-multiple choice questions.in the knowledge plates of "Green Plants in the Biosphere",non-multiple choice question score>multiple choice question score.(2)There are seven knowledge points in "Biology and Biosphere" in the knowledge section,among which the key points are:"Food chain and food web in the ecosystem"(in the form of multiple choice questions and non-multiple choice questions)and "Composition of the ecosystem and the role of each part"(in the form of non-multiple choice questions).Knowledge plate structure layers of "Structure Levels of Organisms" often take an examination of the knowledge of 11,among which the key points are:"Microscope,the basic structure and using method","The basic structure of the plant cells","The beginning of a new life,a fertilized egg",both in the form of multiple choice and the choice.The knowledge section "Green Plants in the Biosphere" has 15 frequently tested knowledge points,of which the key points are:"The basic structure and main functions of leaves"(in the form of non-choice questions),"In the process of photosynthesis "Material transformation and energy transformation"(in the form of non-choice questions),"The conditions and processes of seed germination"(in the form of multiple-choice questions and non-choice questions).The above conclusions can provide data support and reference for teachers to establish teaching priorities.(3)The twelve typical dynamic difficulties are:"Food chain and food web in ecosystem","Close relationship between living things","Basic structure and use of microscope","Basic structure of plant cells","Beginning of new life:The fertilized egg","The basic process of cell division," "The structure of single-celled organisms and life","Leaves the basic structure and main function","The difference between respiration and photosynthesis and contact","The structure of root tip,and the characteristics of the corresponding to absorb a function","Conditions and process of seed germination,the structure and composition of the seed".We select the test questions that examine these typical dynamic teaching difficulties from the test paper as typical problems to test students and investigate the causes of difficulties.The results of the investigation were collected to comprehensively understand the students' biological learning process and results,diagnose the existing problems in biology classroom teaching in junior high school,and get corresponding teaching inspiration.In this way,the examination is combined with teachers' teaching and students' learning,which really plays the role of the examination paper in the evaluation and feedback of classroom teachingIn order to truly achieve the purpose of "Teaching by Learning and Improving Learning by Teaching" in educational activities on the basis of data analysis and investigation of causes,the author proposes a strategy to promote the effectiveness of junior high school biology classroom teaching.It includes three steps:pre-class analysis based on data analysis(understanding the big data background of knowledge points,writing instructional design based on data analysis),in-class teaching based on data analysis and after-school training based on data analysis.The pre-class analysis based on data analysis is the basic level,the in-class teaching based on data analysis is the application level,and the post-class training based on data analysis is the consolidation level.These three steps are interlocking and progressive,forming an analysis of test papers based on the big data platform improving the application model of junior middle school biology classroom teaching effect.The author strictly designs and implements the classroom teaching process based on the results of relevant data analysis of test papers on the big data platform,and takes the "basic structure of plant cells" as an example to give a complete teaching case.