PENINGKATAN HASIL BELAJAR MATEMATIKA MATERI BANGUN RUANG SISI LENGKUNG MELALUI METODE COLEGA MEDIASI

Abstract

Abstract. A "Colega Mediasi" method is a part of cooperatif learning method which uses the real mediator. The existence of mediator in the learning process is believed to be able to increase the student achievement of mathematic and the students learning activities. Therefore this research was intended to apply the colega mediasi method to students of IX grade SMPN 1 Dononorojo, Pacitan. The type of this research is a classroom action research of three cycles. The data were collected by observation, interview, test and performance assessment. The research shows that the student achievement score of each cycle I, II, III are respectively 50%, 84.38%, 90.63%; and the students activities score of each cycle I, II, III are respectively 51.25%, 78.125%,   86.25%. It can be concluded that the implementation of Colega Mediasi method can improve the result of student achievement as well as the student activities.

Key Words: the student achievement, Colega Mediasi Method