The objectives of this research was improving the learning process which covered teacher activities, student activities, result study and solving the obstacles that appear while research by using plants and animals miniature media. This research took living things theme which combined Mathematics and Indonesian subjects. This research uses classroom action research design, which conducted in two cycles. The data collection techniques that used were observation, test and questionnaire. The data which had been collected is analyzed by using qualitative and quantitative description analysis technique.The result of research shows that by using miniature media was able to increase enforceability of teacher activity in the first cycle 98% and second cycle 100%. While the score of teacher activity achievement was also increasing while in the first cycle get the average 78,08 and second cycle 89,05. Moreover, based on the research result showed the increasing of students activity enforceability in the first cycle in the first cycle with average 74,07% and second cycle with average 85,92%. The score of students activity achievement was also increasing which in the first cycle, the average score is 74,26 and second cycle with average 84,14. The result study of students for Indonesian subject with score average in the first cycle was 86,40 and second cycle was 91,70. In mathematics subject score average in the first cycle was 80 and second cycle with 92,22. All of obstacles were also able to be overcomed.