Abstract
Abstract: The mathematics learning outcomes of ninth-grade students at SMPN 3 Kempas were still relatively low, indicating the need for a learning model that could have a positive effect on mathematics learning outcomes. This study aimed to describe the development of students’ mathematics learning outcomes during the implementation of the Problem Based Learning model and to analyze whether the mathematics learning outcomes of students who learned using the Problem Based Learning model were better than those of students who learned using conventional learning. The research employed descriptive research and a quasi-experimental method using The Nonequivalent Posttest Only Control Group Design. The sample was selected using simple random sampling, with class IX.A as the experimental class and class IX.D as the control class. Data were collected through quizzes and an essay-based mathematics learning outcomes test. The results showed that the average quiz score increased from 68.71 in the first meeting to 80.24 in the sixth meeting. The t-test result showed a p-value of 0.000, with an average learning outcome score of 71.13 for the experimental class and 54.77 for the control class. Thus, the mathematics learning outcomes of students who learned using the Problem Based Learning model were better than those of students who learned using conventional learning. Keywords: Learning Outcomes; Problem Based Learning; Conventional Learning. Abstrak: Hasil belajar matematika peserta didik kelas IX SMPN 3 Kempas masih tergolong rendah, sehingga diperlukan penerapan model pembelajaran yang dapat memberikan pengaruh positif terhadap hasil belajar matematika. Penelitian ini bertujuan untuk mendeskripsikan perkembangan hasil belajar matematika peserta didik selama diterapkan model Problem Based Learning serta menganalisis apakah hasil belajar matematika peserta didik yang belajar dengan model Problem Based Learning lebih baik daripada peserta didik yang belajar dengan pembelajaran konvensional. Jenis penelitian yang digunakan adalah penelitian deskriptif dan eksperimen semu (quasi experiment) dengan rancangan The Nonequivalent Posttest Only Control Group Design. Sampel dipilih menggunakan teknik simple random sampling, dengan kelas IX.A sebagai kelas eksperimen dan kelas IX.D sebagai kelas kontrol. Data diperoleh melalui kuis dan tes hasil belajar matematika berbentuk uraian. Hasil penelitian menunjukkan bahwa rata-rata nilai kuis meningkat dari 68,71 pada pertemuan pertama menjadi 80,24 pada pertemuan keenam. Hasil memperoleh sebesar 0,000, dengan rata-rata hasil belajar kelas eksperimen sebesar 71,13 dan kelas kontrol sebesar 54,77. Dengan demikian, hasil belajar matematika peserta didik yang belajar menggunakan model pembelajaran Problem Based Learning lebih baik daripada peserta didik yang belajar menggunakan pembelajaran konvensional. Kata kunci: Hasil Belajar; Problem Based Learning; Pembelajaran Konvensional.
