Diagnose Of Cognitive Factors In Mistakes In Senior Chemistry Problem Solving

Problem solving is not only a productive activity process, but also an advanced learning process. The student's learning is also a kind of process of problem solving. The study on students' problem solving is beneficial to help the students experience and understand the process and method of scientific research, form the permanent learning ability, cultivate their critical thinking features and form their innovation spirits and practice abilities.Based on the theory recently home and abroad and the result of questionnaire, the article raise the necessity from the angle of both theory and reality, combine the main idea of psychology and teaching theory, use reference analysis, questionnaire investigation, sample analysis and think-aloud method etc to study the current situation of students' chemical problem solving , investigate the process and features of students' chemical problem solving and analyze the problem representation and the action in problem solving strategy application in the course of students' problem solving, in order to find the factors that result in the failure of senior students' problem solving. The result will guide the practice of teaching and studying in senior school.The objects of this article are senior school students in Jiangsu province, and we've based on the high school chemical problem solving. In this article, though the classify experiment and process of problem solving of students from different grades, we give static describe and some support to the theory hypothesis, then control the variable strictly, combine with the think-aloud result, make dynamic describe and analysis to the hypothesis. The result of analysis all support the theory hypothesis. That means the research on the factors that result in failure of senior students' problem solving in accordance with the fact of students. Our results show:1. In the process of learning chemistry, we find that there are many problems existing universally, such as that their consciousness of problem solving is not strong, the level of representation is low, they are lack of the strategies of problem solving and that their self-control is not sufficient. Therefore, we need urgently to understand the characters of their problem solving, to study the process of students' problem solving, and to foster and improve their ability of problem solving.2. Correct problem representation is the premise and guarantee of solving...