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Nora Listantia
Universitas Mataram
Humanities Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Engineering Environmental Science Health Professions Immunology & microbiology Industrial & Manufacturing Engineering Mechanical Engineering Medicine & Pharmacology Nursing Public Health Other

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Chemistry Poster-Assisted Demonstration to Enhance Generic Science Skills in Redox Reaction Learning: A Quasi-Experimental Study of Grade XII Students Ni Putu Erika Pebriana; Eka Junaidi; Nora Listantia
BIOCHEPHY: Journal of Science Education Vol. 6 No. 1 (2026)
Publisher : MO.RI Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52562/biochephy.v6i1.1975

Abstract

This study examined the effect of the chemistry poster-assisted demonstration method on improving students' generic science skills in redox reaction material. The study was motivated by the low proportion of students reaching the Minimum Mastery Criteria (MMC) in redox material at SMA Negeri 1 Praya, alongside the limited use of instructional methods that present chemical phenomena directly to learners. A quasi-experimental design with a pretest–posttest control group format was employed, involving two Grade XII classes: one received the chemistry poster demonstration treatment, while the other received Discovery Learning combined with lecture-based instruction. The instrument consisted of validated and reliability-tested two-tier multiple-choice items. The mean score of the experimental class increased from 50.57 to 81.37 (moderate-to-high N-Gain), while the control class increased from 62.33 to 73.48 (low N-Gain). A paired-sample t-test produced a significance value (2-tailed) of 0.000 (p < 0.05), leading to the rejection of H? and acceptance of H?. These findings indicate that the chemistry poster-assisted demonstration method has a statistically significant effect on improving students' generic science skills in redox reaction material and may be considered a viable alternative instructional strategy for abstract chemistry topics.
Co-Authors Arif Rahman Aruna Akbar Zhafransyah Astini, Yuli Baiq Anggun Hilendri Lestari Baiq Dewi Aprilia Arnita Beni Nasriadi Bening Sagita Lestari D. Tialurra Della Nabila Dewi Rispawati Dewi Rispawati Dyah Puspitasari Ningthias Eka Junaidi Eko Supriastuti Eko Supriastuti Supriastuti Elvina Setiawati Ermia Hidayanti Eva Solina Feryansyah Firmansyah, Dodiy Fitri Aliyah Herawati Khotmi Herliana Rosika Jeckson Siahaan Karoluslina Khairul Wajdi Lale Budi Hutami Rahayu Lale Puspita Kembang Lalu Rudyat Telly Savalas Lusia Novita Ramadhani M. Gunawan Supiarmo Meilynda Pomeistia Muhammad Diaz Naufal Akhdiyat Nadia Nuril Ferdaus Ni Putu Erika Pebriana Nikita Putri Putri Handayani Putri Ramdaniah Reny Wardiningsih Resty Yusnirmala Dewi Ria Sofia Nurmala Risa Nadia Astuti Riska Ageng Pangestu Rosiya Wardani Rosyia Wardani Rozana Lestari Sartika Hijriati Sri Maryanti Sudirman Sudirman Suhaili Sunniarti Ariani suparlan Suparlan . Supiani Rahayu Yuliadi Yuliadi Zaura Fatilla