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All Journal Research in the Mathematical and Natural Sciences
Sumarno Ismail
Program Studi Pendidikan Matematika, Universitas Negeri Gorontalo, Bone Bolango 96554, Indonesia
Computer Science & IT Education Mathematics

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Pengembangan Media Pembelajaran Interaktif Berbasis Visual Basic for Application pada PowerPoint Menggunakan Pendekatan ADDIE Moh. Alfa Rezi Ali; Sumarno Ismail; Yamin Ismail
Research in the Mathematical and Natural Sciences Vol. 5 No. 1 (2026): November 2025-April 2026
Publisher : Scimadly Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55657/rmns.v5i1.298

Abstract

The use of instructional media in mathematics learning is often still static, resulting in low student engagement and increased boredom during the learning process. Therefore, interactive learning media are needed to enhance students’ interest and participation. This study aims to develop a mathematics learning media based on Visual Basic for Application (VBA) in Microsoft PowerPoint on the topic of sequences and series, and to evaluate its validity and practicality. This research employed the ADDIE development model, which consists of five stages: analysis, design, development, implementation, and evaluation. The research instruments included media validation sheets, material validation sheets, and questionnaires for teacher and student responses. The data were analyzed using the average percentage of assessment scores. The results showed that the developed learning media achieved a very high level of validity, with 92% from media experts and 91% from material experts. In addition, the practicality level was categorized as very practical, with 98% from teacher responses and 87% from student responses. Thus, the VBA-based PowerPoint learning media is considered valid and practical for use in mathematics learning, particularly on the topic of sequences and series.
Bilangan Terhubung Pelangi pada Graf Tengah (M(G)) dari Graf Ulat (C_(m,2)) Fuji Fauzia Kiayi; Sumarno Ismail; Nisky Imansyah Yahya; Lailany Yahya; Salmun K. Nasib
Research in the Mathematical and Natural Sciences Vol. 4 No. 1 (2025): November 2024-April 2025
Publisher : Scimadly Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55657/rmns.v4i1.204

Abstract

Edge coloring of a graph is considered rainbow connected if the graph is connected and a rainbow path exists for every pair of points. The rainbow connection number of a graph, denoted as , represents the smallest number of colors required to make the graph is rainbow connected. This study examines the rainbow connection number of the middle graph of a caterpillar graph. The middle graph is a modified result of a graph , denoted as . It is described as a graph constructed from the intersection of a set of points and edges. The set of points in the middle graph consists of the combination of points and edges of the graph . Two points are considered adjacent if only they are connected in , or if one point corresponds to a point and the other corresponds to an edge adjacent to it. A caterpillar graph denoted by is a tree that will be a path if all the leaf points are deleted. The results of this research show the rainbow-connected number theorem for the middle graph of the caterpillar graph for .
Co-Authors Fuji Fauzia Kiayi Lailany Yahya Moh. Alfa Rezi Ali Nisky Imansyah Yahya Salmun K. Nasib Yamin Ismail