The purpose of this study are to provide concrete teaching material searching for the methol of Game instruction by grasping the defect of Understaning - based Game Instruction Approach and the help understanding Understanding-based Game Instruction Approach. The object of this study is 70 students of sixth grade in H elementary school who are diided into two groups , one is the 35 students as experimental group with the researcher and the other is 35 studens(20 boys and 15 girls) as comparative group with Y teacher in charge of them. To inquire the difference of the changes in the effective domain and the psycho-motor domain , collective data were analysed using SPSS 10.0 for Windows. Same questionnaire and skill test for the experimental group and the comparative one were conducted before and after the fact. The mean difference and the standard deviation of the tests were calulated and were spplied the independent - test for verifying the difference of the changes. The level of significance for the tests was established as p<.05, and the conclusions of the study through the result of the tests by the statistical analysis and the discussion are as follow: Firstly, the experimental group got higher marks than the comparative group on the basic manners in the effective domain , and the t-test of the tests showed meaningful difference(p<.01) Secondly, the experimental group got higher marks than the comparative group on the psychological characteristics in the effective domain, and the t-test of the tests showed meaningful difference(p<.01) Thirdly, the experimental group got higher marks than the comparative group on the social characteristics in the effective domain, but the t-test of the tests did not show meaningful difference at total.