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All Journal Wahana Matematika dan Sains Union: Jurnal Ilmiah Pendidikan Matematika
Puspitasari, Lila
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Education Mathematics

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Peningkatan Pemahaman dan Problem Solving Siswa Kelas VIII melalui Evaluasi Formatif pada Materi Fungsi Linear Rahmadani, Novriza Ardhia; Fuady, Anies; Puspitasari, Lila
Wahana Matematika dan Sains: Jurnal Matematika, Sains, dan Pembelajarannya Vol. 19 No. 2 (2025): Agustus 2025
Publisher : Universitas Pendidikan Ganesha

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23887/wms.v19i2.101056

Abstract

Kesulitan memahami konsep dasar materi fungsi linear berdampak pada kemampuan siswa dalam memecahkan masalah. Berdasarkan hasil observasi awal, penelitian ini bertujuan untuk menerapkan evaluasi formatif sebagai perlakuan yang diharapkan mampu meningkatkan pemahaman konsep dan kemampuan pemecahan masalah siswa pada materi fungsi linear. Metode yang digunakan pada penelitian ini adalah penelitian tindakan kelas dengan subjek siswa kelas VIII-E SMPN 25 Malang. Penelitian dilakukan dengan tahapan pra siklus, siklus I dan siklus II. Peningkatan nilai rata – rata dan persentase ketuntasan belajar terjadi selama tahapan siklus yang mencakup perencanaan, tindakan, observasi, dan refleksi. Hasil penelitian ini berdasarkan evaluasi formatif untuk meningkatkan kemampuan pemahaman konsep dan pemecahan masalah dari rata – rata siswa 74,37 (siklus I) menjadi 84,41 (siklus II) dengan presentasi ketuntasan klasikal 50% (siklus I) menjadi 88,88%. Peningkatan kemampuan pemahaman konsep dan pemecahan masalah terjadi karena adanya kenaikan persentase siswa dengan tingkat kemampuan kategori sangat baik. Dengan ini evaluasi formatif membantu siswa memperbaiki cara berpikir mereka, meningkatkan keterlibatan mereka dalam proses pembelajaran, dan memahami kesalahan. Kata kunci: pemahaman konsep, pemecahan masalah, evaluasi formatif
Improving students' problem solving ability in solving mathematical problems on linear function topic through PBL model assisted by GeoGebra with TaRL approach Pradiarti, Refni Adesia; Fuady, Anies; Puspitasari, Lila
UNION : Jurnal Ilmiah Pendidikan Matematika Vol 13 No 3 (2025): In Progress
Publisher : Universitas Sarjanawiyata Tamansiswa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30738/union.v13i3.19871

Abstract

The aim of this research is to enhance mathematical problem-solving abilities in linear function content through the use of GeoGebra and the Teaching at the Right Level (TaRL) technique in conjunction with the Problem Based Learning (PBL) learning model. This research is a classroom action research conducted in class VIIID of SMPN 25 Malang, with 32 students as the subjects of the study. The planning, execution, observation, and reflection phases were all included in the two cycles of the study. The instruments used in this study are problem-solving ability tests and student activity observation sheets. The results show that students' problem-solving skills improved from an average of 39.25% (pre-test) to 57.25% in cycle I, and further increased to 81.77% in cycle II. The classical completeness based on the class average score also increased from 28.12% (pre-test) to 65.62% (cycle I), and then reached 81.25% (cycle II). The use of GeoGebra in the PBL model helped students understand the graph of linear functions, while the TaRL approach helped tailor the learning to the diverse needs of the students. This study proves that the combination of the PBL model and TaRL approach can effectively enhance students' mathematical problem-solving skills. This study contributes to mathematics education by demonstrating the practical integration of differentiated instruction (TaRL) and interactive technology (GeoGebra) within a PBL framework to significantly improve students’ problem-solving abilities in linear function topics.
Co-Authors Fuady, Anies Rahmadani, Novriza Ardhia Refni Adesia Pradiarti