THE EFFECTIVENESS OF MATHEMATICS LEARNING THROUGH THE APPLICATION OF OPEN ENDED APPROACH

This study aims to determine the effectiveness of learning mathematics through the application of the Open Ended approach at SMA Negeri 3 Jeneponto in terms of: (1) students' mathematics learning outcomes, (2) students' mathematics learning activities and (3) student responses. This research is a type of pre-experimental research involving one class as an experimental class without a control class with the One Group Pretest Posttest Design. The sample in this study was class XII MIA 1 as many as 25 students consisting of 13 boys and 12 girls. The sampling technique uses Cluster Random Sampling. This research was conducted for 5 meetings. The instruments in this study were tests to see student learning outcomes, observation sheets to observe student activities during learning, observation sheets of learning implementation to observe the teacher's ability to manage learning in accordance with lesson plans, and questionnaires to determine students' responses to learning through the application of the Open approach. ended. The results of the study show that: (1) the average score of the students' mathematics learning achievement test after the Open Ended approach is applied is 85.8 with a standard deviation of 7.9. From these data it was found that 23 students (92%) had achieved individual mastery and this meant that classical mastery had been achieved, (2) There was an increase in student learning outcomes after applying the Open Ended approach where the average gain was normalized, namely 0.76 and generally in the high category, (3) The average percentage of student activity frequency is 88.0% and reaches the active criteria, (4) Student response questionnaires show that student responses to the Open Ended approach are positive, namely 89.5%. From the results of this study, it can be concluded that the Open Ended approach is effectively applied to students of SMA Negeri 3 Jeneponto.Penelitian ini bertujuan untuk mengetahui keefektifan pembelajaran matematika melalui penerapan pendekatan Open Ended SMA Negeri 3 Jeneponto yang ditinjau dari: (1) hasil belajar matematika siswa, (2) aktivitas belajar matematika siswa dan (3) respons siswa. Penelitian ini merupakan jenis penelitian Pra-Eksperimen yang melibatkan satu kelas sebagai kelas eksperimen tanpa adanya kelas kontrol dengan desain penelitian One Group Pretest Posttest Design. Sampel dalam penelitian ini adalah kelas XII MIA 1 sebanyak 25 orang siswa yang terdiri dari 13 orang laki-laki dan 12 perempuan. Teknik pengambilan sampel menggunakan Cluster Random Sampling. Penelitian ini dilaksanakan selama 5 kali pertemuan. Instrumen dalam penelitian ini adalah tes untuk melihat hasil belajar siswa, lembar observasi untuk mengamati aktivitas siswa selama pembelajaran berlangsung, lembar observasi keterlaksanaan pembelajaran untuk mengamati kemampuan guru dalam mengelola pembelajaran sesuai dengan RPP, serta lembar angket untuk mengetahui respons siswa terhadap pembelajaran melalui penerapan pendekatan Open Ended. Hasil penelitian menunjukkan bahwa: (1) skor rata-rata tes hasil belajar matematika siswa setelah diterapkan pendekatan Open Ended adalah 85,8 dengan standar deviasi 7,9. Dari data tersebut diperoleh bahwa 23 siswa (92%) telah mencapai ketuntasan individu dan ini berarti bahwa ketuntasan secara klasikal telah tercapai, (2) Terjadi peningkatan hasil belajar siswa setelah diterapkan pendekatan Open Ended dimana nilai rata-rata gain ternormalisasi yaitu 0,76 dan umumnya berada pada kategori tinggi, (3) Rata-rata persentase frekuensi aktivitas siswa yaitu 88.0% dan mencapai kriteria aktif, (4) Angket respons siswa menunjukkan bahwa respons siswa terhadap pendekatan Open Ended positif yaitu 89,5%. Dari hasil penelitian ini, dapat disimpulkan bahwa pendekatan Open Ended efektif diterapkan pada siswa SMA Negeri 3 Jeneponto