A Study On The Conceptual Representation Of Chemistry Learning In Junior Middle School Students

Chemistry concepts is the chemical phenomena, chemical facts-by comparison, synthesize, analyze, draw conclusions and analogies by abstracting methods such as rational knowledge, it reflects the essence of chemical phenomena and facts, is the basic unit in which students learn chemistry. Concepts of learning in students of middle school chemistry study of chemistry plays an important role. The initial stage of junior middle school chemistry study are students learning chemistry, involves a number of fundamental chemical concepts, chemistry of these abstract concepts difficult to grasp and use of accurate, and accurate characterization and application of the concept is the Foundation of students in solving chemistry problems and critical, too, is an important basis for teachers monitor their students’learning of.Know how concepts are formed from the root causes, characterization, and characterization of causes for diversity as well as the factors that influence students’conceptual characterization, fundamentally improve the students conceptual representation level, accurate ability to use chemical concept is the focus of this paper.This topic through on junior high school chemical courses standard, and junior high school chemical textbook and chemical tests questions of analysis, construction junior high school chemical courses in the of chemical concept system, this based Shang to with body concept theory, and construction doctrine learning theory, and has meaning learning theory and information processing theory for guide, through questionnaire investigation test probes has junior high school students chemical concept of characterization way, and levels level and effects concept characterization of factors, research results indicates that:(1) Sample characterization of propositions representation is commonly used for students chemical characterization of a basic conceptual representation, is a student of the least common method of characterization(2)Students’concept of chemical characterization is diverse, but representation and levels of characterization needs to improve(3) The generally low level of junior middle school chemistry concept map construction, the concept of students’multiple representation level is not high(4) The chemical concept representation level of junior high school students and students’ interest in learning, self awareness significant correlation exists, regardless of the gender does not exist a statistically significant difference.In analysis research effects students chemical concept characterization of factors of based Shang, author made has improve students concept characterization level of teaching policy:(1) inspired students of learning interest, development students of learning of self-confidence;(2) more way rendering concept teaching content, rich students of concept characterization (3) attention intuitive teaching, help students awareness concept;(4) attention chemical concept network of construction, formed concept system.