Sudrajad, Hendar2015-07-282015-07-282015-07-28wahyu sari yenihttp://repository.unri.ac.id/xmlui/handle/123456789/7329This research aim to to develop the attempt peripheral conception the effective giration for the study of middle physics at school and university. Research approach used by Research and Development (reseach and development) from Gall and Borg, what modification by Sukmadinata and kith (2007). Product from this research is consisted of by four component, namely desk of alternative giration, operation guidance, guidance of attempt and deskripsi of giration concepts which is come within in attempt items Effectiveness of Peripheral praktikum developed in this research is evaluated from two aspect, namely validity and praktikalitas. Indicator for the examination of validity cover the validity fill and empirical validity, while to determine the praktikalitas by a test-drive limited by entangling student of SMA and Student. Technique analyse the data used in this research is descriptive analysis. Pursuant to gathering result and analyse the data, obtained by picture that attempt peripheral developed in this research own the very high effectiveness to eight item of attempt items, high effectiveness to three attempt items, and lower to one developed attempt item. Thereby, attempt peripheral developed in this research can be expressed competent to be used in middle physics study at school and university, specially to nine attempt item identifie.enUR e-Research