"material Structure And Properties Of Materials In The Teaching Of Several Concepts And Theories Discussed

The basic education curriculum reform towards the 21st century in our country is officially launched in 2001, which is a profound reform in the field of education. Since the implementation of the new course, some new and different textbooks are published and used. "Structure and Property of the material" is one of the new textbooks and contains the content of the optional course 3 for the high school science students. As we know, "Structure and Property of the material" aims at the structures and properties of atoms, molecules and crystals, as well as the related theories, which is the fundament of chemistry. The high-school students have learns some concepts and theories of chemistry before. However, these contents are not clear and detailed due to the limit of the required courses. The students will not understand them more clearly and master them well. Thus, Structure and Property of the material will remedy these disadvantages. As a matter of fact, the contents of Structure and Properties of the material are too abstract to better understand. Moreover, some concepts and theories described in the present textbooks are not clear or complete. In this thesis, we have investigated the shortage of the present textbooks to add some contents for and to provide the Teaching Plans for these concepts and theories.The psychological characteristics and cognitive development of the high-school student are significantly different from those of the adult. Specially, they like to press for answers to the novel matter. Therefore, the teaching content and teaching methods should be suitable for them. This modification plan for the textbooks in this thesis is based on the learning motivation theory. We provided the students the history of the development of some concepts and theories in the chemistry in order to improve their cognitive level for science and stimulate their interest on study.Four chemical concepts:atomic orbital, electron cloud, schematic diagram of atomic structure and molecular, as well as three theories of chemistry:quantum mechanics, valence-bond theory and molecular orbital theory have been studied in this thesis. The shortcomings of these concepts and theories in the present textbooks, the historical background and development of the concepts and theories are given. In addition, the teaching methods to these concepts and theories were offered.