ttabel . Hal ini menunjukkan bahwa hipotesis penelitian ini diterima. Dengan demikian dapat disimpulkan bahwa penerapan metode pembelajaran reciprocal teaching lebih efektif daripada metode pembelajaran konvensional ditinjau dari minat dan prestasi belajar matematika pada siswa kelas VIII Semester I SMP Ma'arif NU Jatinegara 01 Kabupaten Tegal tahun pelajaran 2010/2011 pokok bahasan fungsi. Hal ini dilihat dari hasil angket minat belajar siswa yang diberi perlakuan model pembelajaran reciprocal teaching lebih tinggi dibandingkan dengan hasil angket minat belajar siswa yang diberi perlakuan model pembelajaran konvensional. Rata-rata prestasi belajar siswa yang diberi perlakuan model pembelajaran reciprocal teaching lebih tinggi dari pada prestasi belajar siswa yang diberi perlakuan model pembelajaran konvensional. English : Puji Astuti. 2011. "Effectiveness of Learning Mathematics Using Reciprocal Teaching Model Point Of Interest in Mathematics Learning and Achievement. (Research Studies Class VIII On odd semester junior Ma'arif NU 01 Jatinegara Tegal regency Academic Year 2010/2011 In the Subject Function ". Thesis. Mathematics Education. M. Shaefur Rokhman, M.Si. Drs Ponohardjo, M.Pd. Faculty of Teacher Training and Education. Pancasakti University of Tegal. Keywords: Effectiveness , Reciprocal Teaching , Enthusiasm , Achievement Learning This study aims to 1) To find out whether there are differences in interests and learning achievement between students who were subjected to reciprocal teaching model of learning with students who are not given reciprocal treatment teaching learning model 2) To determine whether reciprocal teaching model of learning in terms of interest and student learning achievement more effective use than conventional methods in the subject function. The population in this study are all class VIII Semester junior school year Ma'arif NU Jatinegara Tegal regency 2010/2011 with the number of students 212 students divided in 6 classes. Than 212 students were taken samples cluster random sampling of 73 students divided into 2 groups. Each group consisted of 37 and 36 students. Group I, which VIII.A class as an experimental class (class with reciprocal teaching method) and group 2, namely VIII.B class as the control class (the class with the conventional method). Documentation methods used to obtain student's name and value data of Central Deuteronomy semester students in the first half of class VIII. The research data was obtained from the results of achievement tests and questionnaires interest in learning. Data analysis was tested by using t test analysis Based on analysis of the obtained t count = 5.386 where ttable with significance level of 5% price comparison ttable = 2.006 proved that tcount > ttable. This indicates that this research hypothesis acceptable. It can be concluded that the implementation of reciprocal teaching learning methods more effective than conventional learning methods in terms of interests and achievements of students studying mathematics in grade VIII Semester junior Ma'arif NU 01 Jatinegara Tegal regency school year 2010/2011 subject function. It is seen from the results of student interest questionnaire treated with reciprocal teaching model of learning is higher than the results of student interest questionnaire treated with conventional learning models. The average learning achievement of students who were subjected to reciprocal teaching model of learning is higher than on the learning achievement of students who were subjected to conventional learning models." />