Research On The Application Of Pre-assignment In Chemistry Teaching In Junior Middle School

The continuous advance of education reform means that education must cultivate talents with self-learning ability,which indicates the present education should attach importance to cultivating students' self-learning ability to make education adapt to the lifelong development of students.That is to say,we should pay attention to this point in the chemistry teaching,and the classroom as the major part of chemistry teaching is no exception.Thus,at present,people pay special attention to the efficiency of classroom teaching,then the students-based class arises under such a demand.Having a great impact on the students,pre-assignment is the first step in the students-based class,and further affect the efficiency of learning.The study on the pre-assignment was put forward under the Concept of Student-oriented,which could help students learn actively and enhance the enthusiasm of students in the class.To be meaningful,the pre-assignment must be designed reasonably.However,through literature review,current research on pre-assignment is much few,and on chemical is even less and scattered,which is mostly reported in small journals.Based on this situation,the pre-assignment can be systematicly studied from the the two aspects of design and application,so as to improve the efficiency of classroom teaching to make students more active learning and improve their learning ability.Through a lot of literature,this paper first explained the reasons of the topic selection,meanwhile analyzed the research status and significance and introduced the connotation of pre-assignment by combinding the related literature at home and abroad.Compared with the traditional preparation and the guidance case,the support of the pre-assignment theoretical research mainly consists of students-based education thought,recently zone of proximal development theory and constructivist learning theory etc.Secondly,on the basis of these theoretical studies we prepared a student questionnaire and a teacher interview outline,aim to master the current learning situation of students and the teachers' understanding about pre-assignment in chemistry of Yan'an junior middle school.After the actual investigation we analyzed these data as a design basis of pre-assignment.Then explain the main points in the design process from three aspects of the design principles,methods and evaluation.Additionally,we applied the designed pre-assignment to the actual teaching and selected two grade classes of Yan'an City experimental middle school as the experimental objects.The investigation was proceeded again at the end of application,and the positive role of pre-assignment played in students' learning was analyzed according to the scores.Finally,this paper summarized the analysis,obtained the deficiency of the study conclusion and made a prospect on this study for the future.