Abstract: This study aims to extend to classrooms the psychomotor and aquatic psychomotor programs designed in the research to help improve the motor ability of children with developmental disorder. A total of 16 children were divided into the test group A and the test group B, each consisting of 8 children. MOT 4-6 was applied to the subjects in the pre-test and post-test, respectively. The SPSS 18.0 program was used to process data in the study. The equivalence between groups was tested by calculating the average and the standard deviation using the independent samples t-test. First, the 16 weeks psychomotor and aquatic psychomotor programs were found to have positive effects on agility, coordination, balance and reaction of children with developmental disorder. Both programs showed statistically meaningful differences within the groups between before and after they were carried out (p≤0.05). Second, the 16 weeks psychomotor and aquatic psychomotor programs were found to have positive effects on fine motor skills of children with developmental disorder. Some meaningful differences were found in the aquatic pshchomotricity group before and after conducting the programs while no meaningful difference was found in the psychomotricity group (p≤0.05). Third, the 16 weeks psychomotor and aquatic psychomotor programs were found to have positive effects on running power, the ability to speed and control movements. The psychomotricity group showed meaningful differences within the group before and after the programs while no meaningful difference was found within the aquatic psychomotricity group (p≤0.05). Results of this study and the results of previous studies, further research on effective program research and measurement methods for developmental ability of children with developmental disabilities will be needed.