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p-Index From 2021 - 2026
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All Journal Lensa: Jurnal Kependidikan Fisika Jurnal Tiyasadarma: Jurnal Pengabdian Kepada Masyarakat
Feri Iskandar
Jurusan Fisika FMIPA, Institut Teknologi Bandung
Humanities Astronomy Automotive Engineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Physics

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Edukasi Fisika: Pembuatan Es Krim Menggunakan Metode Contextual Teaching and Learning Iskandar, Feri; Okimustava
Jurnal Tiyasadarma Vol. 2 No. 2 (2025): Vol. 2 No. 2 (2025): Januari 2025 | Jurnal Tiyasadarma
Publisher : LPPM ITEBA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62375/jta.v2i2.443

Abstract

The low level of scientific literacy in society and the perception of physics as a difficult subject to understand pose significant challenges in enhancing public comprehension and engagement with science. Addressing these challenges requires a contextual learning approach that links physics concepts to everyday activities, enabling the community to better understand and apply scientific knowledge. This program aimed to improve public understanding of physics concepts through a contextual approach applied to ice cream-making activities, while also equipping participants with practical skills that are both educationally and economically beneficial. The activity was attended by 11 participants, mostly housewives from Mekar Sari Housing Complex, Sekupang District, Batam City. Conducted at the Posyandu facility, the program utilized the Contextual Teaching and Learning (CTL) approach, incorporating education sessions, demonstrations, hands-on ice cream making, and reflective discussions. Data collection was carried out through direct observations and Likert-scale-based pre-test and post-test questionnaires to measure participants’ understanding, skills, motivation, and creativity. The results indicated an increase in participants' understanding of physics concepts, with the average pre-test score of 58% rising to 93% in the post-test. The program also successfully enhanced participants’ motivation and creativity in applying physics concepts to everyday life. Positive feedback from participants suggested the sustainable application of the knowledge gained, particularly in home-based ice cream-making activities. This activity effectively improved participants' understanding of physics concepts, motivation, and creativity through a contextual approach based on ice cream-making, providing sustainable educational and practical benefits.
Quantitative Analysis of Ant Motion Using Video Tracking: Evidence of Quasi-Harmonic Oscillatory Behavior Iskandar, Feri; Toifur, Moh
Lensa: Jurnal Kependidikan Fisika Vol. 14 No. 1: June 2026
Publisher : Universitas Pendidikan Mandalika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/j-lkf.v14i1.19593

Abstract

The motion of living organisms, including insects, often appears irregular and complex, making it difficult to describe using simple physical models. Nevertheless, certain biological movements may contain periodic components that can be approximated using basic motion models in physics. This study aims to analyze the movement of an ant using video tracking with the Tracker software to investigate whether its motion exhibits characteristics related to simple harmonic motion (SHM). Motion data were obtained from a recorded video with a frame rate of 20 fps and processed to determine the two-dimensional position projected onto a one-dimensional displacement axis, from which velocity and acceleration were derived using Tracker. The displacement–time analysis shows quasi-periodic fluctuations that can be approximated by a sinusoidal function with an amplitude of approximately 0.042 m and a frequency of about 0.21 Hz. The acceleration–displacement relationship shows a general negative trend consistent with the tendency predicted by SHM, although deviations from ideal linearity are observed. In addition, the velocity–displacement phase diagram does not form a clear elliptical pattern, indicating that the motion does not strictly follow ideal SHM behavior. These findings suggest that ant locomotion exhibits quasi-harmonic characteristics influenced by biological locomotion mechanisms and environmental interactions, demonstrating that video-based motion analysis provides a quantitative approach for examining oscillatory components in natural biological motion.
Co-Authors Moh. Toifur Okimustava