Exploration Of Chemistry Concept Teaching In Junior Middle School Based On Core Literacy

Chemistry concept is an important part of chemistry knowledge.Chemistry learning thinking and chemistry core literacy qualities are the necessary qualities for students to learn chemistry.In the present chemistry teaching of junior middle school,the students' chemistry concept learning effect has not reached the ideal state because of the characteristics of the chemistry concept category itself and the students' and teachers' attitude to it.In this paper,the specific problems in concept teaching and learning as well as the teachers' awareness of cultivating students' core competence in concept teaching are investigated by means of interview and questionnaire survey,through the detailed analysis of the Middle School Examination questions to understand the specific examination of the core literacy.In view of the problems in the teaching and learning of chemical concepts in junior middle school and the requirements of examination,at first,based on the literature analysis,the General Strategies of concept teaching introduction,formation and consolidation are understood in a new direction,and the strategies of link points are formed.Then,according to own teaching experience,improving classification on the basis of the previous concept classification and exploring the six types of chemical concept teaching process ideas,forming a process line strategy.In order to provide the case function,choosing one example from each of the six concepts,and the pointand-line strategy is combined to carry on the concrete teaching design.Finally,in order to verify the effect of junior middle school chemistry teaching strategy's exploration,we used the control experiment method.Performance tests shows that it can improve the effects of the chemical concepts' teaching which strategies we explored in this paper.Thus,it can provide some reference materials for junior middle school chemical concept teaching.The teaching process strategies of the six categories of concepts studied in this paper are as follows:(1)The teaching thought of the concept of chemical substance: To observe and obtain the intuitive physical properties of matter,Design experiments to explore the chemical property,Observation and analysis to obtain material attribute representation,The formation of material image characteristics,To the extent that the analysis of material discrimination.(2)The teaching thought of the concept of chemical language: To observe the use of examples,To form the representation of use,To form the sense of distinguishing the meaning of language,To form the concept and to adapt the cognitive Schema.(3)The teaching thought of Auxiliary Concept: To explore the reasons for the introduction of concept,To explore the essence of concept,To summarize the law of concept use,To assimilate cognitive Schema.(4)The teaching thought of principle-based concept: Positive and negative examples of concept analysis,Summary examples of similarities and differences,Cognitive Schema analysis,Cognitive schema analysis,Positive examples of the characteristics of analysis,Concept attribute summary,Language description of the concept,Concept formation.(5)The teaching thought of the concept of operating skills: Skills similar use situation analysis,Skills operating rules and principles of the formation of norms,Students imitation operation,Attention and reason analysis,Concept formation.(6)The teaching thought of the concept of computing skills: Case study,Rule generalization,Concept representation,Concept advanced use and summary rule,Concept advanced,Application internalization.