The research objective was to improve the understanding and creative thinking skills of elementary school teachers in the learning process. The research design used is to make the teacher's group into small groups. During the learning process, observations on teacher collaboration during learning with multimedia media were carried out to assess the understanding and creative thinking abilities of teachers. The results of observations in each cycle are evaluated as reflection material in the next cycle to improve the understanding and creative thinking skills of teachers in accordance with predetermined targets. Data analysis was carried out in a quantitative descriptive manner. From the results of the T-test, it is known that there are significant differences. This means that the understanding of concepts and Science Process Skills increases after the teacher experiences the learning process using multimedia learning media. From these results, the average value of concept understanding increased from 39.89 to 93.48. 98% of teachers gave a positive response, namely agreeing and strongly agreeing that the learning process with multimedia learning media can improve science process skills and material understanding in subjects for elementary school teachers