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All Journal Jurnal Penelitian Pendidikan IPA (JPPIPA) Jurnal Pendidikan Sains Indonesia (Indonesian Journal of Science Education)
Silaen, Jayanti
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Education Materials Science & Nanotechnology Physics

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The Feasibility of Developing Learning Videos on the Technique of Bioassay Panjaitan*, Ruqiah Ganda Putri; Tenriawaru, Andi Besse; Silaen, Jayanti; Nikmah, Nur Alfiatun; Ire, Fetronila; Lestari, Liya Angga
Jurnal Pendidikan Sains Indonesia Vol 13, No 3 (2025): JULY 2025
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/jpsi.v13i3.47007

Abstract

The development of information and communication technology has a significant impact on the world of education, particularly in the provision of learning media. Video-based learning media has become an effective alternative for visualizing complex materials, such as in the bioassay technique course. This study aims to develop and assess the feasibility of educational videos as media for the Bioassay technique course, which includes material on testing using animal testing. This study uses the research and development (RD) method with a modified ADDIE development model consisting of four stages: analysis, design, development, and evaluation. Data collection techniques include validation by experts. The instrument used is a validation sheet with a Likert scale. The aspects assessed include format, content, and language. For the four indicators in the format aspect, a validity score of 1 was obtained. Similarly, for the three indicators in the content aspect, the validity score was also 1, and for the two indicators in the language aspect, the validity score remained at 1. Overall, from these three aspects, an average validation score of 1.00 was achieved, categorized as very high. Therefore, the video is deemed suitable to be used as a learning media in the bioassay technique course.
Analysis of the Quality of Sudents’ Critical Reasoning Instruments Using Rasch Model Yokhebed; Karmadi, Rexy Maulana Dwi; Silaen, Jayanti; Meidina, Sherli; Nikmah, Nur Alfiatun
Jurnal Penelitian Pendidikan IPA Vol 11 No 3 (2025): March
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v11i3.9584

Abstract

This research aims to analyzes the validity and reliability of a students' critical reasoning questionnaire using the Rasch Model. This quantitative descriptive research employed a non-experimental survey design involving 122 fourth-semester undergraduate students from the College of Teacher Training and Education (STKIP) Melawi. Data were collected through an online questionnaire distributed via Google Forms. Validity was assessed through unidimensionality and item fit analysis, while reliability was measured using person reliability, item reliability, and Cronbach’s Alpha. The results indicate that the instrument has not yet achieved good item validity, with only 4 out of 20 items classified as valid. Reliability analysis showed Cronbach’s Alpha of 0.55 (bad category), item reliability of 0.98 (special category), and person reliability of 0.44 (weak category). Item difficulty analysis identified four difficulty levels: 2 items were very easy, 9 easy, 6 difficult, and 3 very difficult. The Rasch model’s item discrimination analysis produced eight item groups based on an item separation index of H = 9.97. These findings emphasize the need to refine questionnaire items and enhance respondent engagement. A validated instrument will support educational assessments by providing a reliable tool for measuring students’ critical reasoning skills in teacher training institutions.
Co-Authors Ire, Fetronila Liya Angga Lestari, Liya Angga Meidina, Sherli Nikmah, Nur Alfiatun Rexy Maulana Dwi Karmadi Ruqiah Ganda Putri Panjaitan Tenriawaru, Andi Besse Yokhebed