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All Journal Jurnal Penelitian Pendidikan IPA (JPPIPA) Al-Mujahidah : Jurnal Pendidikan Guru Madrasah Ibtidaiyah Indonesian Journal of Pharmaceutical Education
Dewi Darmiyani Napu
IAIN Sultan Amai Gorontalo
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Education Materials Science & Nanotechnology Medicine & Pharmacology Physics

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Sintesis Khalkon dan Uji Aktivitas Tabir Surya Secara In Vitro Dewi Darmiyani Napu
Indonesian Journal of Pharmaceutical Education Vol 2, No 3 (2022): September-Desember 2022
Publisher : Jurusan Farmasi Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37311/ijpe.v2i3.19326

Abstract

Synthesis of 2’,4’-dihydroxy-3,4-dimethoxychalcone and in vitro test of its sunscreen activity have been carried out. Chalcone was synthesized from 3,4-dimethoxybenzaldehyde and 2,4-dihydroxyacetophenone through Claisen-Schmidt condensation. The synthesis was performed by using KOH 40% under stirring at room temperature for 48 h. The synthesized compounds was characterized using FTIR, GC-MS and 1H NMR spectrometers. Further, the chalcone were screened for its in vitro sunscreen activity by using UV-Vis spectrophotometer. The result showed that the chalcone has been succesfully synthesized in 36.94% Yield. The activity of invitro test showed the chalcone has SPF values with maximal protection category at the consentration 15 µ/mL produce SPF 9.749
The Impact of Project-Based Flex Blended Learning Model on Critical Thinking Skills of Students in Science Courses Alfian Erwinsyah; Zohrawaty Hiola; Sabrina Nadjib Mohamad; Dewi Darmiyani Napu; Aljunaid Bakari; Asriyati Nadjamuddin; Rinaldi Datunsolang
Jurnal Penelitian Pendidikan IPA Vol 11 No 6 (2025): June
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v11i6.11250

Abstract

This study aims to analyze the effectiveness of the Project-Based Flex Blended Learning (PjBFBL) model in improving students' critical thinking skills on Ohm's Law material in science courses. The quasi-experimental method uses a Nonequivalent Control Group Design with 41 fourth semester students divided into experimental (PjBFBL) and control (conventional) groups. Instruments include critical thinking tests based on seven indicators (interpretation, analysis, evaluation, inference, explanation, self-regulation, essential questions), analyzed using N-Gain, T-test, and effect size. Results showed the experimental group achieved a moderate N-Gain improvement (0.63) with the highest categories in inference (0.78; high) and explanation (0.73; high), while the control group only had a low N-Gain (0.28). The independent T-test confirmed the significant difference (t (25,092) = 7.230; p<0.05) with an average difference of 35.78% and a large effect size (Cohen's d=2.299). The research conclusion indicates that the PjBFBL model effectively improves critical thinking skills, particularly in multidimensional reasoning and information synthesis, through the integration of authentic projects, hybrid flexibility, and structured collaboration. The findings recommend the adoption of this model in science learning to bridge the 21st century competency gap, noting the need to strengthen the interpretation aspect through more contextualized instruments
PENERAPAN MODEL PEMBELAJARAN INQUIRY LEARNING DALAM MENINGKATKAN HASIL BELAJAR SISWA PADA PEMBELAJARAN IPAS MATERI GAYA DISEKITAR KITA Nurul Ilma; Munirah; Dewi Darmiyani Napu
Al-mujahidah Vol 7 No 1 (2026): November-April
Publisher : Institut Agma Islam Hamzanwadi NW Lombok TImur

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51806/al-mujahidah.v7i1.395

Abstract

This study aims to determine whether the learning outcomes of science can be improved through the Inquiry learning model in fourth-grade students of SDN 4 Limboto. The method used in this study is the classroom action research (CAR) method. This research was conducted at SDN 4 Limboto in fourth-grade students. The object of this study is the application of the think pair share learning method in improving the learning outcomes of science students on the material of forces around us in fourth-grade SDN 4 Limboto. The subjects of this study were fourth-grade students of SDN 4 Limboto. Data collection techniques in this study were observation and tests. Based on the data analysis and learning process in the previous chapter, the researcher can conclude that learning using the inquiry learning model can improve the quality of science lessons on the material of forces around us in fourth-grade SDN 4 Limboto. Student learning outcomes before the application of the inquiry learning model had not reached the KKTP. After the application of the inquiry learning model, student learning outcomes increased, as can be seen in the increase in completeness in the pre-cycle from 35%, increasing in cycle 1 to 55%, and in cycle II increasing to 80%. Thus, student learning outcomes and analysis of observation sheets improved in a better direction with the application of the inquiry learning model.
Co-Authors Alfian Erwinsyah Aljunaid Bakari Munirah Nadjamuddin, Asriyati Nurul Ilma Rinaldi Datunsolang Sabrina Nadjib Mohamad Zohrawaty Hiola