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All Journal (JIML) JOURNAL OF INNOVATIVE MATHEMATICS LEARNING
Jozua Sabandar
IKIP Siliwangi, Cimahi, Indonesia
Education Mathematics Other

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Development of Teaching Materials Linear Program based on Problem-Based Learning Assisted by Geogebra Applications Arisman Zebua; Asep Ikin Sugandi; Jozua Sabandar
(JIML) JOURNAL OF INNOVATIVE MATHEMATICS LEARNING Vol 6, No 1 (2023): VOLUME 6 NUMBER 1, MARCH 2023
Publisher : IKIP Siliwangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22460/jiml.v6i1.15229

Abstract

This study aims to develop teaching materials for linear programming based on Problem Based Learning assisted by GeoGebra applications that are valid, practical, and effective. The type of research used is a type of development research using the 4-D development model. The 4-D development model consists of the Define, design, develop, and disseminate phases. This study only reached the development stage. The research subjects were class XI SMA Negeri 2 Toma students. The instruments used were material expert and media expert validation sheets as well as student response practicality sheets and mathematical problem-solving ability tests. Based on the results of the research that has been done, it is found that the analysis of the validation results of material experts is 3.65 with a percentage of 73.06% in the valid category, and media expert validation is 4.08 with a percentage of 81.67% in the valid category. In the limited test, analysis of the results of the practicality sheet of 10 students obtained an average percentage of 73.73% in the practical category, and in the broad test of 29 students obtained an average percentage of 89.33% in the very practical category. In the effectiveness test, it was found that 71.25% was in  good category. Thus, it can be concluded that the linear program teaching materials based on problem-based learning assisted by the GeoGebra application meet valid and practical criteria and are suitable for use in learning, and can be effective in facilitating mathematical problem-solving skills.
The Effect of EPub-Assisted Teaching Materials to Improve Students’ Numeracy Ability Enjang Sadam; Jozua Sabandar; Wahyu Hidayat
(JIML) JOURNAL OF INNOVATIVE MATHEMATICS LEARNING Vol. 9 No. 2 (2026): VOLUME 9 NUMBER 2, JUNE 2026
Publisher : IKIP Siliwangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22460/jiml.v9i2.25057

Abstract

Numeracy ability has increasingly been recognized as a fundamental competence necessary for students to engage meaningfully with mathematics and real-world problem solving. However, many schools still struggle to cultivate strong numeracy due to the limited use of effective and innovative learning materials. This study aims to examine the effectiveness of EPUB-assisted teaching materials integrated with the MERRDEKA (Mulai dari diri, Eksplorasi konsep, Refleksi mandiri, Ruang kolaborasi, Demonstrasi, Elaborasi, Koneksi materi, dan Aksi nyata) learning flow in improving students numeracy ability. A quasi-experimental method was employed using a pretest-postest control group design. The participants consisted of students from classes XI-C and XI-D, totaling 72 students. Data were collected using a numeracy test as the primary quantitative instrument. The analysis involved calculating N-Gain scores and conducting an independent sample t-test to determine differences in learning improvement between groups. The result showed that the experimental class achieved an N-Gain score of 0.77 (high category), whereas the control class obtained an N-Gain score of 0.45 (medium category). In addition, the independent sample t-test yielded a significance velue of 0.001 < 0.05, indicating a significance difference in numeracy ability improvement between the two groups. Therefore, EPUB-assisted teaching materials integrated with the MERRDEKA learning flow are concluded to be effective in enhancing students numeracy ability.
Co-Authors Arisman Zebua Asep Ikin Sugandi Deanisa Noviana Lukmana Enjang Sadam Wahyu Hidayat