The Preposition Knowledge Of Biology And Science In Junior High School And Its Application In Teaching

A discipline has its relatively independent knowledge system,but at the same time,it also has some prior knowledge as the basis of the discipline.Biology is a natural discipline,which is closely related to many knowledge points of chemistry and physics,and permeates each other.Compared with physics and chemistry,junior high school biology is relatively simple.At present,the school plans to set up biology courses first and gradually increase physics and chemistry in the later stage.But the first student has just started learning biology,academic language skills and biological experiment teaching material of more,and after the new curriculum reform,in the biological teaching materials,the more students have not learned knowledge of physics,chemistry,from the perspective of the process of student learning,to accept knowledge,these QianZhiXing knowledge of teachers' teaching and students' learning caused some problems,teachers' teaching and students' learning seriously into the memory,despise understand,the flexible application of knowledge is difficult to students,can not be achieved from classroom teaching to cultivate students the ability to solve the problem,not conducive to the all-round development of students.Based on this,carry out the research on combing and application of the pre-knowledge of junior high school biology science department :(1)Firstly understand the current research progress and research value of pre-knowledge through literature research method,and define and expound the concept of "pre-knowledge" and "pre-knowledge in junior high school biology".(2)Taking the biology textbook for grade7 in Renjiao Edition as the main body of study,this paper sorted out the pre-knowledge of science in each chapter of the textbook from three perspectives of biology,physics and chemistry,a total of more than 20 pre-knowledge points of science,with the characteristics of wide distribution and strong intersections.(3)By using the method of questionnaire to fill out and face to face interview between teachers and students of different districts in heyang investigation and study,found that most of the teacher's teaching is still in the closed or open,prior knowledge for science mainly takes the form of "reciting",while the student to the front knowledge understanding does not reach the designated position,only the instantaneous memory tests,unable to apply the same knowledge content in different disciplines and fields.(4)Secondly,based on the results of the questionnaire survey and interview,the paper proposes Suggestions on teachers' teaching,such as updating ideas,sharing teaching resources and strengthening discipline exchanges,and proposes that the application of preexisting knowledge should follow the four principles of "auxiliary,linkable,interesting and livable".(5)Science pre-knowledge is divided into practical pre-knowledge and non-practical pre-knowledge,and the application methods of pre-knowledge in teaching are respectively expounded through case study method from these two aspects,and the actual case analysis is carried out for each method.(6)Finally,to lead the knowledge in the teaching effectiveness of the application of comparative analysis,draw two classes students experiment teaching(one class according to the pre knowledge classification,on the basis of follow the principle of application to the implementation of teaching,another class to practice the traditional way of teaching),late again to the teaching content detection.Front is one of the problems in the teaching of knowledge application,is also a student in the classroom to break through the difficulties of knowledge,through this study draw class student performance comparison and test after two classes in the students' knowledge of the front of the answer is to analyze,front knowledge in the teaching of reasonable application can significantly improve student achievement and problem solving skills,make students more in-depth understanding of related knowledge,comprehensive,and in the test,to cultivate the students' comprehensive ability to obtain better development,hope this research can provide reference for a line of teachers in the teaching and help.