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All Journal Kasuari: Physics Education Journal (KPEJ) Finger : Jurnal Ilmiah Teknologi Pendidikan SPEKTRA: Jurnal Kajian Pendidikan Sains
Euis Nursa’adah
Universitas Bengkulu
Computer Science & IT Education Languange, Linguistic, Communication & Media Physics Social Sciences Other

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Analisis Kandungan Asam Sianida (HCN) pada Rebung Bambu Kapal (Gigantochloa schortechinii) sebagai Bahan Makanan Roleka Julia Marcellina; Bhakti Karyadi; Rendy Wikrama Wardana; Euis Nursa’adah; Afrizal Mayub
SPEKTRA: Jurnal Kajian Pendidikan Sains Vol. 11 No. 2 (2025): SPEKTRA: Jurnal Kajian Pendidikan Sains
Publisher : Physics Education Study Program, Faculty of Education and Teacher Training, UNSIQ

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32699/spektra.v11i2.9702

Abstract

This study aims to determine the effect of different lengths of soaking on cyanide acid (HCN) content in ship bamboo shoots (Gigantochloa schortechinii) which are the main ingredient in making Lemea. Lemea is a specialty food of the Rejang tribe in Bengkulu Province where the main ingredient of Lemea is fermented chopped bamboo shoots (young bamboo). This study used a completely randomized design (CRD) with five repetitions and four treatment levels, namely. A = no treatment/control, B = 4 days soaking, C = 5 days soaking, D = 6 days soaking and E = 7 days soaking. The results of the analysis showed that different lengths of soaking time had an effect on reducing cyanide acid (HCN) content. The highest to lowest average cyanide acid (HCN) content was obtained from treatments A (70.066 ppm), B (53.759 ppm), C (42.374 ppm), D (29.739) and E (16.458 ppm). The best cyanide acid (HCN) content was obtained in the immersion treatment for 7 days with an average HCN content of 16.458 ppm, this result is highly recommended because the HCN content is safe for consumption according to FAO (Food and Agriculture Organization).
Development of Alternative Energy-Based Temperature and Heat Module of Wood Waste Charcoal for Science Literacy Dwi Erni Triyanti; Afrizal Mayub; Euis Nursa’adah
Kasuari: Physics Education Journal (KPEJ) Vol. 8 No. 2 (2025): December 2025
Publisher : Universitas Papua, Jurusan Pendidikan Fisika FKIP Unipa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30862/kpej.v8i2.987

Abstract

The low science literacy of students, especially in understanding temperature and heat materials, is a challenge in learning physics in schools. This material is often delivered theoretically without being associated with real life, so students have difficulty understanding concepts in their entirety. This research aims to develop a physics learning module on alternative energy-based temperature and heat materials from charcoal from wood and onion wood waste to improve students' science literacy. The research uses a 4D development model that is limited to the Define, Design, and Develop stages. The Define stage  includes curriculum analysis, identification of student learning difficulties, and exploration of local potential. The Design Stage  produces a contextual module design based on science literacy. At the Develop stage, the modules are validated by experts with results: 90% content aspect, 86% linguistics, and 95% presentation, with an average of 90% indicating the "Feasible" category. The module is considered to have high potential to support contextual learning and improve understanding of the concept of temperature and heat. Thus, this module is worthy of further testing to students in physics learning.
A Practical Guide to a Solar-Powered Fruit Fly Trap for Developing Science Process Skills in Junior High School Students Ruri Okto Pratama; Afrizal Mayub; Sutarno Sutarno; Euis Nursa’adah; Henny Johan
FINGER : Jurnal Ilmiah Teknologi Pendidikan Vol. 5 No. 3 (2026): Finger : Jurnal Ilmiah Teknologi Pendidikan
Publisher : CV. Media Inti Teknologi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58723/finger.v5i3.785

Abstract

Background: Practical science learning requires contextual learning resources that connect scientific concepts with authentic phenomena and local problems. At the study site, a needs analysis indicated a need for a structured practical guide for renewable-energy learning. Aims: This study developed and evaluated a practical guide integrating a solar-powered fruit fly trap and examined changes in students’ science process skills (SPS) after implementation. Methods: The study used research and development with the ADDIE framework. The guide was developed, revised through expert validation, and implemented with 30 ninth-grade students at SMP Negeri 07 Seluma, Bengkulu, Indonesia. Data were collected through observation, teacher interview, a student-needs questionnaire, expert validation, a 25-item student-response questionnaire, and a 30-item SPS pretest–posttest.Results: The needs questionnaire yielded a mean of 77.30%, with 10 of 31 students (32.26%) indicating the guide was very needed and 21 (67.74%) indicating it was needed. Expert validation yielded 93% for material, 90% for media, 87% for language, and 89% for SPS, with an overall feasibility of 89.75%. The mean SPS score increased from 51.25 to 90.17, a 38.92-point increase, with a mean N-gain of 0.798 (high); all eight SPS indicators were in the high category. Student responses averaged 83.97%, with 28 students (93.55%) classified as very good and two (6.45%) as good. Conclusion: The guide was judged very feasible and well received, and its implementation was accompanied by substantial pre–post improvement in SPS. Because the study used a one-group pretest–posttest design without a control group, the results should be interpreted as evidence of pre–post improvement rather than definitive causal proof.
Co-Authors Afrizal Mayub Bhakti Karyadi Dwi Erni Triyanti Henny Johan Rendy Wikrama Wardana Roleka Julia Marcellina Ruri Okto Pratama Sutarno Sutarno