Abstract
In this paper, we develop an assessment sheet for improving the class practice power of mathematics teachers and students who study mathematics. Furthermore, we propose the method of raising a student's class practice power by making them understand knowledge of results of a trial lesson. We evaluate and analysis class practice power of undergraduate students who study mathematics by using the assessment sheet in a trial lesson. The results are as follows. - For the students who had little class practice power, they could not discriminate about whether the teaching method of the mathematics class is good or bad. - Although the students found by themselves in little power about plan and knowledge of teaching method, but they did not find in little knowledge about special contents and understanding of the situation of learners. - By method of factor analysis, we found four factors "consideration to the student", "understanding about teaching resource", "grasp of a student's understanding" and "selection of teaching contents and teaching materials" in the student's trial lesson. - The students could not understand the difference clearly between special knowledge who should be learned before their class practice and instruction technique which should be required of class practice. - The students could consider the remedy of a trial lesson concretely by acquiring the knowledge of results which were found out from the assessment sheet.
