Study On The Strategy Of Stratified Biology Homework Setting In Senior High School Under The New College Entrance Examination Plan

The new college entrance examination plan advocates the educational concept and the selective examination model,which puts forward new requirements for biology teaching in senior high schools.As an important part of teaching,homework setting must be closely combined with the new college entrance examination plan.Teachers should respect the differences and independent choices of students,and implement scientific and reasonable stratified homework settings with the biology key competence as the starting point.Based on high school students' choice of subjects for the college entrance examination,the author investigated and studied the implementation status of stratified biology homework setting in high school in Changsha city through questionnaire survey,interview and classroom observation.The results showed that there were some problems in the implementation of stratified homework,such as insufficient basis for the setting of stratified homework,simple form of homework,the amount and difficulty of homework need to be adjusted,the evaluation method of homework needs to be improved,the inaccurate positioning of students themselves,the limited time and energy of teachers,etc.These problems lead to unsatisfactory results in the implementation of the setting of stratified biology homework.From the results of interviews and questionnaires,the influences were analyzed about the new college entrance examination plan on stratified biology homework setting in senior high school,including the change of the status of biological subjects,the model of selecting subjects and the new evaluation system for college entrance examination on the stratified homework.Based on the influence of the new college entrance examination plan on the stratified homework setting and the problems in the setting of stratified homework,the following principles should be followed in setting stratified homework,i.e.,dynamic stratification,subjectivity,comprehensiveness and encouragement.Combined with the principles,several strategies were put forwardfor the setting of stratified homework: Firstly,accurately analyze the situation of learning,respect the choice of students,reasonably stratify students.Secondly,according to the academic quality standard and the biology key competence,the homework goal and the difficulty level are determined;stratified homework can be set up at different levels,including basic homework,comprehensive homework,practical homework and innovative homework.Thirdly,the communication and cooperation among teachers should be strengthened,stratified homework can be set up by the group of teaching and research or the group of lesson preparation together during the collective lesson preparation;students can choose their own homework at all levels.Fourthly,based on the biology key competence,the evaluation should be conducted in a variety of ways and stratified to reflect the guidance and encouragement.Finally,in order to integrate the stratified homework mode into high school biology teaching,the author designed a stratified homework case "COVID-19 and immune regulation" by integrating the biological subject content with the relevant knowledge of COVID-19 in combination with the hot social issue "COVID-19".The above results can provide references for the front-line teachers to implement stratified work in teaching.