The Experimental Research On The Construct Of Middle School Chemical Concept

Chemical concept is the base of the chemistry build and development, and is the key to middle school chemical studying. Students can learn knowledge, form and develop their capacity mainly by mastering chemical concept. The study of chemical concept impacts both students' chemistry examination results and their learning capacity. Researches on the teaching methods and studying principles of chemical concepts are still popular in the chemical teaching study. Therefore, the paper makes some inquiries in this subject.This paper is consisted of six parts. In the first part, I take up the subject by analyzing of the chemical concept study and research. In the second part, there is an overview of concept meaning, concept analysis, concept studying type and factors which impact the concept studying, In the third part, there is a brief introduction of the two important theories of the chemical concept teaching, and the categories of chemical concept teaching and some kinds of studying theories. In the forth part, I take chemical concept teaching into practice, including the research methods, experiment teaching design, and experiment process, In the fifth part, there is a record of experiment teaching processes and a treatment of experiment dates. In the last part, there is a conclusion of the experiment by the discussion and analysis.The research finds out that the concept teaching according to constructionism theory, which takes students cognitive structure and knowledge experience as the basis and design according to concepts attribution, is good for students to construct concepts by themselves. This teaching method is quite good to stimulate students' motivations, and can help they master knowledge quickly and correctly, optimize their cognitive structure and promote their chemistry results.The research is still in the beginning and exists some defects. I will continue this research in my following teaching practice.