<![CDATA[AbstrakPenelitian ini bertujuan untuk meningkatkan hasil belajar siswa pada pembelajaran matematika kelas 1 melalui pendekatan mastery learning sekolah dasar di Surabaya. Jenis penelitian ini adalah Penelitian Tindakan Kelas (PTK) yang dilakukan dengan empat tahap yaitu perencanaan, pelaksanaan, pengamatan, dan refleksi. Subjek penelitian yaitu kelas 1 berjumlah 34 siswa. Penelitian menggunakan tiga teknik pengumpulan data, yaitu tes, observasi, dan wawancara. Hasil penelitian menunjukkan peningkatan hasil belajar siswa dan respons siswa dikatakan baik. Hasil belajar siswa meningkat 61% dari siklus I ke siklus II. Pada siklus 1, persentase ketuntasan siswa adalah 24% atau 8 siswa. Pada siklus II, persentase ketuntasan siswa sebanyak 85% atau 29 siswa. Artinya penerapan pendekatan mastery learning dapat meningkatkan hasil belajar siswa pada pembelajaran matematika di sekolah dasar.AbstractThis study aimed to improve students’ Mathematical learning outcomes through the mastery learning approach in the first grade of elementary schools in Surabaya. This research used Classroom Action Research (CAR) which was conducted in four stages, namely planning, implementing, observing, and reflecting. The research subjects were the first grade consisting of 34 students. This study used three data collection techniques, namely, tests, observations, and interviews. The results indicated that the students’ learning outcomes improved and their responses were good. The students’ learning outcomes increased by 61% from cycle I to cycle II. In cycle 1, the percentage of student completeness was 24% or 8 students. In cycle II, the percentage of student completeness was 85% or 29 students. Therefore, the application of the mastery learning approach could improve the students’ Mathematical learning outcomes in elementary schools.]]>
