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All Journal Indiktika : Jurnal Inovasi Pendidikan Matematika Hipotenusa: Journal of Research Mathematics Education (HJRME)
Ruri Handayani
Universitas Muhammadiyah Lampung
Education Mathematics Other

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PENGGUNAAN ALAT PERAGA BENDA KONKRIT MATEMATIKA SISWA KELAS III SDN 2 BUYUT UDIK Yumi Sarassanti; Dwi Desmayanasari; Ruri Handayani
Hipotenusa Journal of Research Mathematics Education (HJRME) Vol 8, No 1 (2025): Hipotenusa Journal of Research Mathematics Education (HJRME)
Publisher : Universitas Muhammadiyah Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36269/hjrme.v8i1.3138

Abstract

Mathematics is taught from elementary school onwards. However, not all students are able to follow this learning well, but many students cannot complete and master the mathematical concepts being taught, which means their learning outcomes are still below the KKM. The study focuses on the teacher's efforts to improve mathematics learning outcomes when the teacher does not complete the task completely, namely. H. learning is still teacher-centered. The purpose of this study was to improve student learning outcomes in learning mathematics in Fractions material by using concrete object props. The subjects of this study were teachers and students of SDN 2 Buyut Udik, Gunung Sugih District, Central Lampung Regency. The problems of this study are: low learning outcomes in mathematics from fractional material, teacher learning abilities must be improved again, teachers do not use the learning environment, learning is still teacher-centered resulting in low student scores. The type of research used is Classroom Action Research (CAR). The data collection technique was carried out by posttest. The results showed that 10 students (45%) of the 22 students achieved the KKM before using the Betoniobjekti teaching tool. After using concrete object visual aids in Cycle I the number of students who achieved the KKM increased to 17 students (77%), which was then continued in Cycle II with the results of students who achieved the KKM to 20 students (91 students).
LKPD Interaktif Berbasis Discovery Learning: Inovasi Media Pembelajaran dalam Meningkatkan Penalaran Matematis Fungky Marian; Ruri Handayani; Izza Eka Ningrum
Indiktika : Jurnal Inovasi Pendidikan Matematika Vol. 8 No. 2 (2026): Indiktika : Jurnal Inovasi Pendidikan Matematika
Publisher : FKIP Universitas PGRI Palembang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31851/indiktika.v8i2.18130

Abstract

This study aims to analyze the effectiveness of an interactive Student Worksheet (LKPD) based on Discovery Learning in enhancing students’ mathematical reasoning skills on the topic of sets. A quasi-experimental design with a one-group pretest–posttest approach was employed, involving 30 seventh-grade students from SMPN 2 Banguntapan, Yogyakarta. Data were collected through validated mathematical reasoning tests and supplemented by expert validation conducted by two content experts and two media experts to ensure the LKPD’s quality in terms of content, language, and interactive design. Results showed a substantial improvement in students’ performance, with the mean score increasing from 59.3 (pretest) to 84.7 (posttest), representing a 42.8% gain. A paired t-test confirmed a statistically significant difference between the two scores (Sig. (2-tailed) = 0.000 < 0.05). These findings indicate that the interactive LKPD grounded in Discovery Learning effectively enhances mathematical reasoning. Given its structured yet student-centered approach, this learning tool holds strong potential for broader implementation across diverse classroom settings in Indonesia and similar educational contexts.
Co-Authors Dwi Desmayanasari Fungky Marian Ningrum, Izza Eka Yumi Sarassanti