| Chemistry education in High school is an important part of science education, it’s significant to students’ scientific literacy and it plays an irreplaceable role in the all-round development of students’ future. Chemical materials, as chemistry course main bearer, is the main carrier between teachers’ teaching and students’ learning, In order to adapt to the Quality Education and learning of investigative type needs promoted by the society, and to realize the optimization of education target, It’s very important that we should pay attention to student’s cognitive development when we take layout design in the current teaching materials. Learning results that students take after studying is not external behavior changes, but the change of ability and the tendency of the internal change, which also called the change of cognitive structure. Teachers’ teaching will make students’ internal psychological mechanism to happen and we can infer the change of the internal psychological by that the change in mechanism of external behavior of the students, and this is the starting point of layout design in the teaching material content. This article take "electrochemical" as an example, study how the different kind layout to impact the students’structure.The chemical cognitive structure of a student is the one stored in the students’mind, which includes structure of specialty knowledge and ability. One of the important objectives of high teacher is optimizing students’ cognitive structure. This research measured chemistry students’ cognitive structures by using word association on the "electrochemical". From this perspective, cognitive structure can be knew how to change before and after two teaching ways, as to provide certain reference for teaching research in high school.The word association and examination Paper were employed as data collection tools. We select students of class4and class5from DongYuanLu Middle School in Xi’an District as research object, Take the class5as experimental class, take the class4as control class. And teacher still use the layout by the teaching materials published in People’s Education Press in the control one, which used at all time in the local, the teacher teach "electrochemical" from "Galvanic cell" to "Electrolysis" in other words, the teacher use the new layout which is different from the above one in the experimental one, in other words, the teacher teach "electrochemical" from "Electrolysis" to "Galvanic cell", And we get the conclusion by this study that the new arrangement order can more conducive to the establishment of the students’ cognition structure.The main work of this study is find difference between two teaching ways, and expected to reflect in the students’ cognitive structure. The study is innovative in the following aspects:(1) Research electrochemical part knowledge of teaching, and finally use the new layout as experiment teaching;(2) Using a new cognitive structure diagnosis method to test students’chemical cognition structure, and supplementary calculation methods of words association;(3) Choosing a special knowledge "electrochemistry" as the point to investigate the different achievements students’ cognitive structure;(4) Through the empirical research proved that the teaching model which focus on basic concepts and principles is more conducive to students’ cognitive structure. |
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