The systemic analysis / fieldwork of physical phenomena consists an important component of Science Curriculum for the Primary Education. At the text book of science there is a great variety of interdisciplinary information and references (texts, photographs, suggested activities ?) for every subject and physical phenomenon. The application of the suggested interdisciplinary approach at the educational procedure is enhanced and can be optimized by the implementation / integration of the scientific / educational methodology, as presented at the current study. At this study, apart from the practices of implementation and the results of the investigation, are also demonstrated suggestions for the optimization of the interdisciplinary approach through the suggested systemic analysis of every subject.