PENINGKATAN HASIL BELAJAR MATEMATIKA BANGUN DATAR MELALUI MEDIA GEOBOARD SISWA KELAS III

Muhammad Ilham Kusuma (Universitas Islam Sultan Agung)
Mochamad Abdul Basir (Universitas Islam Sultan Agung)
Tri Ayu Carika (Universitas Islam Sultan Agung)

SCIENCE : Jurnal Inovasi Pendidikan Matematika dan IPA
Vol. 6 No. 4 (2026)

ABSTRACT Mathematics learning outcomes on plane-shape material among third-grade students at SDN Muktiharjo Lor had not yet reached the expected level, as indicated by a pre-cycle class average of 57.04 and classical mastery of 22.2%. This condition indicates the need for learning experiences that enable students to understand the concepts of sides and angles through more concrete and structured activities. This study aimed to improve mathematics learning outcomes through the use of geoboard media integrated with the Problem Based Learning (PBL) model and a deep learning approach. The study employed classroom action research based on the Kemmis and Taggart model, conducted in two cycles, with each cycle consisting of two meetings and involving 27 third-grade students. Data were collected through learning outcome tests and observations of teacher and student activities, and were analyzed based on the class average, classical mastery, and observation results. The findings showed that the class average increased from 57.04 in the pre-cycle to 70.37 in Cycle I and 77.41 in Cycle II. Classical mastery also increased from 22.2% to 77.8% and reached 92.6% in Cycle II, exceeding the success indicator of 85%. These findings indicate that the use of geoboard integrated with Problem Based Learning and deep learning can support improvements in students' mathematics learning outcomes on plane-shape material. ABSTRAK Hasil belajar matematika pada materi bangun datar di kelas III SDN Muktiharjo Lor masih belum mencapai capaian yang diharapkan, terlihat dari nilai rata-rata pra siklus sebesar 57,04 dengan ketuntasan klasikal 22,2%. Kondisi tersebut menunjukkan perlunya pengalaman belajar yang memungkinkan siswa memahami konsep sisi dan sudut melalui aktivitas yang lebih konkret dan terarah. Penelitian ini bertujuan meningkatkan hasil belajar matematika melalui pemanfaatan media geoboard yang dipadukan dengan model Problem Based Learning (PBL) dan pendekatan deep learning. Penelitian dilaksanakan menggunakan penelitian tindakan kelas model Kemmis dan Taggart dalam dua siklus, dengan masing-masing siklus terdiri atas dua pertemuan dan melibatkan 27 siswa kelas III. Data penelitian diperoleh melalui tes hasil belajar serta observasi aktivitas guru dan siswa, kemudian dianalisis berdasarkan nilai rata-rata, ketuntasan klasikal, dan hasil observasi. Hasil penelitian menunjukkan bahwa nilai rata-rata meningkat dari 57,04 pada pra siklus menjadi 70,37 pada Siklus I dan 77,41 pada Siklus II. Ketuntasan klasikal juga meningkat dari 22,2% menjadi 77,8% dan mencapai 92,6% pada Siklus II, melampaui indikator keberhasilan sebesar 85%. Temuan ini menunjukkan bahwa penggunaan geoboard yang terintegrasi dengan Problem Based Learning dan deep learning dapat mendukung peningkatan hasil belajar matematika siswa pada materi bangun datar.