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All Journal AL-ISHLAH: Jurnal Pendidikan Jurnal Penelitian Pendidikan IPA (JPPIPA) Best Journal (Biology Education, Sains and Technology) Community Development Journal: Jurnal Pengabdian Masyarakat Budapest International Research and Critics Institute-Journal (BIRCI-Journal): Humanities and Social Sciences Global Science Society
Raja Novi Ariska
Universitas Samudra
Religion Agriculture, Biological Sciences & Forestry Arts Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Economics, Econometrics & Finance Education Energy Engineering Environmental Science Health Professions Immunology & microbiology Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Physics Public Health Social Sciences

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Journal : Jurnal Penelitian Pendidikan IPA (JPPIPA)

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Development of Performance Assessment Instruments Through Practical Learning to Improve Science Process Skills Elfrida Elfrida; Nursamsu Nursamsu; Raja Novi Ariska
Jurnal Penelitian Pendidikan IPA Vol. 7 No. SpecialIssue (2021): December
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v7iSpecialIssue.867

Abstract

Basic Biology subjects are integrated between theory and practicum. Practical learning is an essential way that teachers can take to improve students' science process skills, so a valid instrument is needed to measure it. The objective of this study is to produce a valid performance assessment instrument in practical learning; a student worksheet in practical learning; the improvement of science process skills; and teacher response. The type of research is referring to model of 4-D. The subject of research is composed of the students in the odd semester academic year 2021-2022 at SMA Muhammadiyah Langsa. Instruments of research consist of validation sheet, student worksheet, observation sheet, questionnaire. The findings show validity score is 84% (good category); student worksheet in practical learning is 43% (very good category); there is the improvement of students science process skills before and after the practical learning, which shows by N-gain value of 0.64% (high category); and teacher response to developed performance assessment instrument is 83% (very practical category).
Conservation of Gayo’s Endemic Orchid (Paphiopedilum primulinum) Through In Vitro Seed Germination and Development with Coconut Water Tri Mustika Sarjani; Raja Novi Ariska; Ekariana S. Pandia; Dewi Prastika; M. Iqbal H. Tambunan
Jurnal Penelitian Pendidikan IPA Vol 9 No SpecialIssue (2023): UNRAM journals and research based on science education, science applic
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v9iSpecialIssue.5307

Abstract

Paphiopedilum primulinum is one of endemic orchids in Gayo, Aceh, Indonesia. This terrestrial orchid is registered as endangered species due to IUCN. The low availability of this orchids in nature is due to habitat lost, over-collection for commercial purpose, and low seed germination rate which affected by unidentified factors, yet the study of propagating this orchid is rarely discussed. This experimental research is aim to see the effect of coconut water (CW) concentration to P. primulinum seed germination and development through in vitro culture. The sample of the study used the seed of P. primulinum which age 14 weeks after pollination. The research use ½ Murashige and Skoog media (MS) with four different coconut water (CW) concentration (0,10%, 20%, 30%) and incubated for 90 days. The seed germination rate is calculated due to the percentage of its total germinate seed and seed development indicator divided into 5 stages (0-5). The result shows that the seed of Paphiopedilum primulinum germinate best at 30% CW concentration and only in this concentration the seedling stage reach stage 5 (4.8%). This result implies that 30% CW concentration in ½ MS medium is the best medium to germinate this seed.
Co-Authors Azrul Rizki Dewi Prastika Dini Fitria Ekariana S Pandia Elfrida Elfrida Elfrida Elfrida Erni Junaida M. Iqbal H. Tambunan Marjanah Marjanah Nurmasytah Nurmasytah Nursamsu Nursamsu Nursamsu Nursamsu Safuridar, Safuridar Sahudra, Tengku Muhammad Sri Jayanthi Surya Asra Tri Mustika Sarjani