A Study On The Application Of Quadric Representation In Chemistry Teaching In Middle School

Quad characterization is increased on the basis of the triple characterization curve representation,the curve representation is the chemical reaction and the process of change is mapped to the curve,through the curve representation to let the students master the concept and principle of more intuitive and clear,help students to link together the triple characterization,let the students grasp the flexible use of the triple characterization and mutual transformation between the three methods.It promotes students’ active construction of knowledge,helps students eliminate heterogeneou s thoughts,and lays a good foundation for future learning,making up for the deficiency of triple representation.Papers in the quad characterized and related contents in the "acid and alkali neutralization",on the basis of literature analysis,clear the connotation of quad char acterization and the value of teaching,building based on "four heavy representation" teaching ideas,and by using the way of thinking in junior middle school and high school in two period of "acid and alkali neutralization" relevant content of teachi ng design and practice of research,exploration based on quad characterization of teaching for students to understand the role of "acid and alkali neutralization" relevant content,and further analysis of two period of teaching in junior high and high school were four heavy teaching significance.The results show that the teaching and application of "four-fold representation" can not only improve students’ representational ability,but also improve their thinking mode of solving problems and promote the development of students’ thinking level.Will quadruple representation used in middle school chemistry teaching,can improve students’ learning initiative and interest,can reflect the characteristics of chemi stry subject,for complex involving a variety of characterization in the title,students can combine quad characterization of thinking,the complex problems simple,improve students study chemistry self-esteem and thus improve their learning interest;On the other hand,chemistry involves a lot of micro knowledge,which requires stude nts to analyze problems from a micro perspective.This is difficult for middle school students,but they can intuitively present the micro change process through the curve,so as to understand problems more quickly.