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All Journal Justek : Jurnal Sains Dan Teknologi Society: Jurnal Pengabdian Masyarakat
Riztamala Diana
Politeknik Manufaktur Negeri Bangka Belitung
Computer Science & IT Control & Systems Engineering Economics, Econometrics & Finance Education Languange, Linguistic, Communication & Media Mathematics Social Sciences

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The Effect of Seawater and Sea Sand Composition Ratio on the Characterization of Voltage and Electric Current Riztamala Diana; Daya Wulandari; Putri Afifa Nur Oktadina; Roviu Darojat
Justek : Jurnal Sains dan Teknologi Vol 9, No 1 (2026): March
Publisher : Unversitas Muhammadiyah Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31764/justek.v9i1.37799

Abstract

The limited availability of fossil fuels and their environmental impacts have encouraged the development of more environmentally friendly alternative energy sources. One of the methods of renewable energy is to utilize seawater and sea sand. This research aims to analyze seawater and sea sand in generating electrical energy. Source of seawater and sea sand from Tongachi Beach Bangka Belitung Indonesia. The research method was mixing seawater and sea sand with a ratio of 100:0%, 70:30%, 50:50%, 30:70%, dan 0:100%.  Measure the seawater according to the percentage 100%, 70%, 50%, 30% and 0%. Then Weigh the sea sand according to the percentage ratio 0%, 30%, 50%, 70% and 100%.  Add the seawater and sea sand to the mixing container according to the weighed ratio. The electrical energy generated is determined by observing the current flow and power are seen on the multimeter. The results showed that the composition ratio of 100:0 % seawater and sea with a voltage of 0.67 V, an electrical current of 0.2 mA and a power of 0.134 watts. It has of the analysis of the composition of seawater and sea sand can potentially be used as a source of electrical energy.                           
Gamification for Young Learners: Transforming Motivation and English Language Skills through Collaborative-Competitive Learning among Junior High School Students at SMPN 5 Sungailiat- Bangka Belitung Titin Indriati; Veniati; Daya Wulandari; Riztamala Diana; Mildazani; Endah Arum Wangi; Decky Putra Revo
Society : Jurnal Pengabdian Masyarakat Vol. 5 No. 3 (2026): Mei
Publisher : Edumedia Solution

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55824/5y0kew29

Abstract

The development of digital technology has significantly influenced and changed the current educational practices, particularly language learning and instruction. However, English instruction at the Indonesian junior secondary school level continues to be predominantly teacher-dominated and frequently provides limited opportunities for interactive, student-centered engagement. A mixed-method approach was applied, including classroom observations, student questionnaires, as well as reflective discussions to examine the impact of the program. Purpose of the Study: This community service was designed to improve students’ learning motivation and English language competencies through the application of gamification-oriented collaborative-competitive learning. The program was carried out at SMP Negeri 5 Sungailiat, Bangka Belitung, involving 30 junior high school students participating in a series of interactive digital games, team-based activities, and point-based competitions integrated into English lessons focusing on past tense structures. Methods: A mixed-method approach was applied, including classroom observations, student questionnaires, as well as reflective discussions to examine the impact of the program. Results: The results revealed a significant improvement in students’ learning motivation, classroom participation, and vocabulary development related to past tense usage. The integration of collaborative and competitive gamification elements created a supportive yet dynamic learning environment, encouraging peer interaction while maintaining students’ enthusiasm through healthy competition. Accordingly, the findings indicate that digital gamification constitutes an effective instructional approach for improving English grammar learning among young learners. This study uniquely integrates collaborative-competitive gamification within a community service framework, offering a practical model for grammar instruction in junior high school EFL contexts.
Co-Authors Daya Wulandari Decky Putra Revo Endah Arum Wangi Mildazani Putri Afifa Nur Oktadina Roviu Darojat Titin Indriati Veniati