Research On The Current Situation Of The Class Introduction Of Mathematics In Junior High School ——An Example Of The Quadratic Equations In One Variable

Class introduction is the initial link of class teaching and learning,also an indispensable component of class teaching.It plays a pivotal role in the completion of teaching tasks.With the rapid development of education and the quality requirements of the curriculum reform on mathematics teaching,It is very meaningful to do research on mathematics class introduction.In this paper,taking the relevant content of " quadratic equation in one variable" as an example to investigate the current situation of the class introduction in junior high school mathematics classroom.mainly using literature research method,questionnaire survey method,teacher interview method,case analysis method and textbook comparison research method.Through teachers' and students' class introduction status questionnaire,teacher interview outline,case analysis of teaching records,get conclusion about the current situation and existing problems of class introduction of "quadratic equation in one variable" related content,based on the above survey conclusions and also the comparative analysis of the content of the four editions of textbooks,the optimization strategy of class introduction is proposed to carry out the teaching design of related content.Regarding the current situation of the class introduction of mathematics in junior high school,the following conclusions were obtained:(1)Most teachers think that class introduction is very important.It has many important roles in classroom teaching,such as attracting students' attention,stimulating learning interest,laying the groundwork for new knowledge teaching,and clarifying teaching goals.(2)The way to obtain materials for class introduction is mainly from teaching materials,online information,excellent case reference and etc.,the common methods of class introduction are review import,problem situation import,instance import,and direct import.(3)Most students think that the introduction of the class is very important and has an obvious effect on classroom learning.(4)The students' favorite class introduction content is life examples,and their favorite classroom introduction method is animated video display.(5)From the perspective of teachers,the existing problems are: insufficient understanding of class introduction theory,lack of introduction materials,import methods are not diverse enough,and difficulty in controlling the introduction time.Regarding the current situation of class introduction of "quadratic equation in one variable" related content,the following conclusions are obtained:(1)Most teachers teach the content of this chapter with the actual problem situation as the main line.(2)The teaching of the concept of quadratic equation in one variable is mainly based on practical problems,and is assisted by analogy import and review import.(3)The solution method of one-dimensional quadratic equation is mostly based on review import.(4)There are still difficulties in the identification of the concept of quadratic equation in one variable,the solving of equations,and the practical application of equations.Based on the above findings,this paper makes an attribution analysis of the problems existing in the class introduction of mathematics in junior high school from the perspective of teachers.:(1)There is a gap in teachers' theoretical understanding of class introduction(2)teachers lack flexibility in class introduction skills.(3)Teachers lack understanding of class introduction functions(4)There are few opportunities for teachers to communicate,observe and learn(5)Teachers do not have a deep understanding of students.Based on the above survey results and the analysis of existing problems,an optimization strategy for class introduction related to "quadratic equations in one variable" is proposed:(1)Fully understand the learning situation to grasp the students' "proximal development zone"(2)Introduce the background of concept generation to clarify the meaning of concept learning(3)Carefully study the essence of solving methods to clarify the internal relationship between each other(4)Introduce the geometric background of algebra content to cultivate the idea of combining students' numbers and shapes(5)The main teacing line of practical problem solving to strengthen the application consciousness.