In this paper, Methodological organizational forms of work and effective exercise time in primary education in Sisak the importance of physical exercise and the implementation of physical education are emphasized, along with the significance of understanding the characteristics of students' growth and development for who the class is organized. Methodological organizational forms of work are crucial for achieving numerous goals and objectives of physical and health education. The paper provides a detailed explanation of frontal, group, and individual forms of work. Each form has its own advantages and takes care of the different needs of children. The application of these methodological organizational forms enables the achievement of longer effective exercise time, which is essential for the healthy growth and development of students. The research conducted in the paper shows that effective exercise time is less than the actual duration of the class. Various factors contribute to this. Given the importance and positive effects of physical exercise, the teacher should organize the time in physical and health education classes as efficiently and effectively as possible. This can be achieved through the proper selection of appropriate methodological organizational forms of work, the correct use of equipment and aids, the appropriate choice of content, and the utilization of available space for exercise. In this way, the time spent in physical activity is maximized.