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All Journal Mimbar Sekolah Dasar Al-Aqlu : Jurnal Matematika, Teknik dan Sains
Kusumaningrum, Sabrina Ratih
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Computer Science & IT Education Engineering Mathematics

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PENGARUH MEDIA JERUK BALI MELALUI PENDEKATAN PMRI MATERI LUAS DAN KELILING BANGUN DATAR KELAS VI: The Influence of Grapefruit Media through the PMRI Approach, Area and Perimeter of Flat Buildings for Class VI Kusumaningrum, Sabrina Ratih; Prasetya, Arif Budi; Zuliana, Eka
Al-Aqlu: Jurnal Matematika, Teknik dan Sains Vol. 2 No. 1 (2024): Januari 2024
Publisher : Yayasan Al-Amin Qalbu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59896/aqlu.v2i1.53

Abstract

This research aims to investigate the influence of using Bali orange media through the Realistic Mathematics Education (PMRI) approach on the subject of area and perimeter of flat shapes among sixth-grade students at SDN 7 Gondosari. The research method employed is quantitative descriptive. The sample was obtained using Nonprobability Sampling technique with a total sampling method, involving a population of 36 students, which also represents the sample size in this study. The data collection instrument used was a test. Data collection techniques involved observation, tests, and documentation. The research findings indicate that the average learning outcome, previously at 50, increased to 70. Therefore, the use of Bali orange media influences students' learning outcomes.
Exploring the Effectiveness of PjBL in Enhancing Students' Understanding of Astronomy Concepts Using Universe Sandbox Kusumaningrum, Sabrina Ratih; Khamdun, Khamdun; Riswari, Lovika Ardana
Mimbar Sekolah Dasar Vol 12, No 2 (2025)
Publisher : Universitas Pendidikan Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53400/mimbar-sd.v12i2.87025

Abstract

Challenges in elementary education frequently arise from the continued use of conventional and monotonous teaching methods, which often lead to low student engagement and difficulty in grasping abstract concepts such as astronomy. These issues are further compounded by the limited availability of digital learning tools and insufficient teacher training. The gap between the expected implementation of interactive learning and actual classroom practices highlights the urgent need for innovative approaches. One such approach is PjBL integrated with interactive media to improve students' conceptual understanding. This study aims to (1) analyze students’ conceptual understanding of astronomy before and after instructional intervention, and (2) measure the extent of improvement achieved through the implementation of PjBL supported by Universe Sandbox media. Employing a quasi-experimental design (one-group pretest-posttest) involving 32 sixth-grade students at SDN 7 Gondosari, data were collected using tests, observations, interviews, and documentation. The data were analyzed through normality testing, paired sample t-tests, and N-Gain calculations. The results indicated a statistically significant difference between pretest and posttest scores, with the paired sample t-test yielding a Sig. (2-tailed) value of 0.000 (0.05), suggesting a substantial increase in conceptual understanding. Additionally, the N-Gain analysis produced an average score of 0.7486, categorized as moderate to high improvement. These findings confirm that the PjBL model, when supported by Universe Sandbox media, is effective in enhancing students’ comprehension of astronomical concepts.
Co-Authors Arif Budi Prasetya Eka Zuliana Khamdun Lovika Ardana Riswari