Design And Practice Of Pre-class Work In High School Biology

In this paper,by reviewing the literature and data related to high school biology pre-class work,it is found that in recent years,pre-class assignments have attracted the attention of scholars and front-line teachers,and there are not many studies on high-level biology pre-class work.The placement work is beneficial to students' interest and attitude in learning biology.It is hoped that by combining the characteristics of biology and the actual situation of students,research on biological pre-class assignments and testing in teaching practice,trying to teach high school biology.The placement of the pre-class assignments provides a different approach than the traditional pre-study,allowing students to increase their interest in learning biology,develop a certain aspect of the student's ability in the course of the completed assignment,and guide the learning of the student's classroom content.The rapid development of society and science and technology has led to a certain change in educational methods and educational models.The high-level biology front-end work was proposed in this process,and is the "living education" proposed by Professor Guo Sile.One of the important steps in an important concept and practice is also the requirement of student-oriented education in the layout of work.Pre-class assignments,pre-study and after-school assignments have their own advantages and disadvantages in practical applications.Traditional pre-study and after-school assignments focus on familiarizing students with textbook content and consolidating teaching content,and cultivating students' self-learning ability.And the ability to explore can not achieve good results,and the pre-class work focuses on the cultivation of students' inquiry ability.Therefore,it is possible to try to put the pre-class work into the teaching activities to make up for the lack of traditional work.Of course,the pre-class work is not applicable to all classroom content,in the teaching,teachers can choose the appropriate way to arrange the teaching content and goals.In order to further understand the actual situation and necessity of the implementation of biological pre-class work,the application status of biological pre-class work was discussed through the questionnaires sent to some students in the internship school and interviews with 10 biology teachers.Students were found to be less interested in learning biology courses and homework,and the surveyed teachers did not widely adopt the form of pre-class work.In order to facilitate the design strategy applicable to different types of course content,the high school biology course(taking the compulsory part of the PEP version)is divided into four types according to the content of the class and its suitable learning methods: theoretical class,experiment class,exercise class and review class,biological predecessor design needs to follow seven principles: openness,low entry,fun,life,leadership,rationality and inquiry,design of predecessor work not every one must follow all the principles,only follow some of the principles according to their priorities and purposes.Through teaching practice,it is found that the application of pre-class homework to high school biology teaching can effectively arouse students' interest and attention to the classroom,and can stimulate students' interest in learning biology.Students' ability to explore and self-learning has certain improvement.Analyze the design of pre-class assignments in practice and its connection with the classroom,as well as the methods of examination and evaluation,observe the classroom response of students,the conversation with students after class and the objective evaluation of two biology teachers.There are still problems in the design,such as not designing different levels of difficulty and type of pre-class work according to the student's level,but at the same time,it can also feel the students' attitude towards biology has changed,but because of the time of practice short and discontinuous does not measure the test scores of students.Therefore,the impact on the scores of students' test papers cannot be concluded.After practice,reflect on the problems and shortcomings in the design and implementation of predecessor operations.For the future design of biological preclass work and the experience of docking with the classroom,I hope to provide reference for the exploration and design of the applied pre-class work of biological.