Study On Teaching Design Of Junior High School Algebra Based On APOS Theory

Compulsory Education New Course Standard puts forward concept and requirements of new teaching design, But today, teaching concept, which guide the practical teaching of the algebra concept in junior high school, is still influenced by traditional teaching ideas, generally exist the situation, that teachers presents the "heavy result, light process" teaching methods, students is difficult to seize the nature of concept.Concept teaching design research is divided into two aspects: One is to seize the reasons about students of algebraic concept understanding barriers: A concept of teaching design research is seize students obstacles to understanding of the concept of algebraic reasons:(1) the cognitive development level of junior high school students is low;(2) the abstract degree of the junior high school algebra concept is high;(3) the students is difficult to accept the teaching way, which the teacher quickly experience to teach(or may not experience) in teaching; Second, APOS theory guide teaching,differ from traditional teaching, promot that student is the main body of teaching activity, learning activities should be experienced three processes, Activities,processes, objects, transition from image thinking to abstract thinking gradually,eventually establish the schema system. Therefore, the implementation of specific studies from the following three aspects: one is to make preparations for teaching,including the establishment of teachers' teaching concept, teaching goal, the analysis of teaching content and Students situation; Second, Compare and analyze the traditional teaching case and APOS theory teaching cases; Third, take the specific teaching strategy of APOS theory teaching in four stages:(1) the operation stage should pay attention to the moderation of material selection, rationality and inspiring;(2) In the process stage, experient the transition from the form thinking to abstract thinking;(3) In the object stage, try to give some guide that thinking language conver to mathematics language;(4) to review the first three stages, the establishment of conceptual scheme, guides the student to the connection between concepts.