Classroom Practice Research On Improving Chemical Language Expression Ability Of High School Students

Chemical language is an important knowledge of chemical units and its various components,such as terminology,symbols,concepts,text;they constitute a complete knowledge structure.Through the interaction with situation,it can improves students'understanding of the significance of chemical knowledge,so as to improving the ability of problem solving,and implement the basic education curriculum reform on students'language competence.The innovation of this paper is analysis the current situation of high school students'weakness in chemistry language ability."Modeling-training"teaching model was proposed,and a practice research on cultivating students'chemistry language competence was completed according to this mode.Sample statistical analysis,literature study method and interview method are applied to this paper,this paper probes into the weakness of students'chemical language expression ability mainly in four aspects:?The expression of chemical expression is not normative;?Lacking of chemical text language accuracy and completeness;?The lack of scientificity and simplicity of chart language expression;?Mental disorders.The reasons for these weaknesses are analyzed and the corresponding teaching policies are put forward.Strategy 1:pay attention to the demonstration role of teachers,including language demonstration,blackboard demonstration and demonstration of experiment;Strategy 2:cultivate students'ability of "listening,speaking,reading and writing",namely to cultivate students'chemical language expression habit.Strategy 3:establish the students'self-confidence in chemical language expression,which is to eliminate the psychological barrier.Then the "modeling-training" teaching mode was proposed and carried out a study of classroom practice.Through the study of teaching practice in the experimental class and the cross-section,it is concluded that the“modeling-training teaching mode can improve the students' chemical language expression ability based on data analysis of Z-test method.