Research On Chemistry Classroom Teaching Behavior Based On Triple Representation

The research of chemistry classroom teaching behavior can promote professional development of teacher,improve the teaching level,to meet the new chemistry curriculum reform.Thesis triple characterization and classroom teaching behavior research status and problems are described and analyzed.Papers presented based on the triple characterization HWF-R-C analysis and detailed definition of the operational definition of related concepts,on the "phenol" teaching clips illustrate specific coding operations and analysis HWF-R-C analysis method,and "phenol" teaching piece made rater reliability.According HWF-R-C analysis drawing different teachers of different charts and map on "halogenated""ionec reaction" and "sodium carbonate and sodium bicarbonate",the three cases detailed,carried out expert teacher and comparative study of the behabior of the novice teachers,access to the characteristics of expert teachers and novice teachers’classroom behavior,indicating that the analysis of rationality and feasibility.The thesis draws the following meaningful conclusions:(1)The number of twists and turns through the bias and draw length,line in the HWF map,the expert teachers to guide students to understand the importance of knowledge from more representation,conversion of different representation between the guide link three different knowledge representation,to help students get a deeper understanding of knowledge,and establish a complete knowledge of the netwofk.(2)Through the HWF map and R-C map of the conclusion can to some extent to achieve mutually confirmed effect.HWF map and R-C map data processing in different ways,both reflect the focus are also different.