Study On Teaching And Learning Of The Middle School Chemistry——Research On Instruction Of Chemical Concept

The objects of chemical research are materials, which innate characters, structures and changes are revealed by chemical concept. So chemical concept is not only basic knowledge that is used to build chemical scientific system and to continue to learn chemistry, but also a basic tool to be used in thoughtful action such as inference and judgement. This paper expounds with the property of teaching and learning in concept of chemistry which is based on the object teaching and the chemical experiments at first, then combines my personal experience from teaching a. in concept of chemistry for many years, to research seven aspects over the question for instruction of chemical concept. (1) The current situation and meaning of this research. (2) Relying on students cognitive structure under the guide of cognitive theory, to accomplish effectively and step by step the targets of chemical concept to be taught and learnt in an order way. (3) According to different classified principles, to develop chemical concept抯 systematization, to enrich continually students cognitive structure and to provide more and more knowledge for students. (4) Starting with the process of forming chemical concept, to help students bring out a great Leap from perceptual knowledge to rational knowledge. (5) Fulfilling teacher抯 leading role on students cognitive structure, in order to improve teaching efficiency. (6) To enrich continually students?cognitive structure and to help students? innovative consciousness and personality through meaningfully study by their motive. (7) To test and to evaluate scientifically on chemical concept is not only a way of effect in teaching and learning, but also one of sciencetific date of judging teachers?and students?activities each other, it provides reference information that can be taken up remediable measures for insufficiencies of teaching and learning.