The purposes of this research were to compare learning achievement on buddhism important days learning, using yonisomanasikara and conventional teaching method               of prathomsuksa 5 students, and to compare of students opinion towards the yonisomanasikara and conventional teaching method. The samples of this research      were prathomsuksa  5 students in primary Kehachumchonladkrabang  School.  The yonisomanasikara teaching method was applied with 40 students as the experimental group and the conventional teaching method was used for the 40 students as the control group. The research instruments were the yanisomanasikara and conventional teaching method plans, learning achievement test and questionnaires of students opinion towards learning using yonisomanasikara and conventional teaching method. The data was analyzed by  , S.D., and t-test independence.
       The results revealed that: 1) The learning achievement of the experimental group studying through the yonisomanasikara teaching method was statistically higher than that of the control group studying through the conventional teaching method at the .01 level of significance. 2) The opinion of prathomsuksa 5 students in primary school to the learning of the buddhism important days studying through the yonisomanasikara teaching method was satisfy at the hight level.
