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Development of Problem-Based Learning Student Worksheets to Train Critical Thinking Skills of Students in Biology Education Study Program Widia Wulandari; Siti Darwa Suryani; Irwandi Irwandi
International Journal of Educational Research Vol. 2 No. 3 (2025): International Journal of Educational Research
Publisher : Asosiasi Riset Ilmu Pendidikan Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62951/ijer.v2i3.481

Abstract

Critical thinking ability is one of the important competencies that students must possess in biology learning. This research aims to develop Problem-Based Learning (PBL) Student Worksheets to train students' critical thinking skills in Plant Anatomy courses. This research uses the Research and Development method with a simplified 4-D model consisting of three stages: Define, Design, and Develop. The research subjects were second-semester Biology Education Study Program students at Universitas Muhammadiyah Bengkulu. Research instruments included media and material expert validation sheets, as well as student response questionnaires. Validation was conducted by one media expert and one material expert, then tested on 5 students (limited trial) and 22 students (extensive trial). Validation results showed that the student worksheets received a "very valid" category with 86% from media experts and 88% from material experts. Practicality tests showed "very practical" results with 89% in limited trials and 91% in extensive trials. The developed student worksheets contained contextual problem scenarios, systematic PBL stages, and critical discussion questions that encourage students to analyze, evaluate, and conclude based on empirical data. This research concludes that PBL-based student worksheets are feasible to use as learning media to train students' critical thinking skills in Plant Anatomy courses.
The Effect of Interest Rates, Exchange Rates, and Coffee Production on Coffee Export Value in South Sulawesi Dwifani Syuhra Ritonga; Sri Astuty; Abdul Rajab; Irwandi Irwandi; Muhammad Syafri
International Journal of Economics and Management Sciences Vol. 3 No. 1 (2026): February : International Journal of Economics and Management Sciences
Publisher : Asosiasi Riset Ekonomi dan Akuntansi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/ijems.v3i1.1146

Abstract

This study aims to analyze the influence of interest rates, exchange rates, and coffee production on the value of coffee exports in South Sulawesi. The background of this study is based on the condition of South Sulawesi coffee exports which have experienced significant fluctuations in recent years despite coffee production tending to increase. This study uses a quantitative approach with time series data for the period 2009-2023 sourced from the World Bank, International Monetary Fund and the Directorate General of Plantations, the Food Crops, Horticulture and Plantation Service of South Sulawesi Province. Data analysis was conducted using multiple linear regression through the EViews 12 application with the classical assumption test as a model prerequisite. The results show that partially interest rates have a significant effect on coffee exports, while exchange rates and coffee production do not have a significant effect. Simultaneously, the three independent variables do not have a significant effect on the value of coffee exports. This finding indicates that external factors, especially interest rates, are more dominant in determining the performance of South Sulawesi coffee exports than internal factors of production and exchange rates.
Development of an Entrepreneurship-Based Science Module to Improve Creative Thinking Skills of Junior High School Students Isnamaini Isnamaini; Irwandi Irwandi; Nopriyeni Nopriyeni
Educational Dynamics: International Journal of Education and Social Sciences Vol. 2 No. 4 (2025): Educational Dynamics: International Journal of Education and Social Sciences
Publisher : International Forum of Researchers and Lecturers

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70062/educationaldynamics.v2i4.299

Abstract

This study aims to develop an entrepreneurship-based science module to enhance the creative thinking skills of students at SMPN 7 Seluma. The development model employed in this study was the ADDIE model. The research subjects were ninth-grade students of SMPN 7 Seluma, with samples consisting of students from classes IX C, IX D, and IX E. The research instruments included expert validation sheets, questionnaires, and pretest and posttest questions. The validation results from experts indicated that the developed entrepreneurship-based science module was valid. In the first trial phase, the module obtained a score of 95%, categorized as very practical. In the second trial phase, the module achieved a score of 96%, also categorized as very practical. The N-gain value of 0.779 in Trial I indicated a high level of improvement in students’ creative thinking skills, while the N-gain value of 0.797 in Trial II also showed a high level of improvement. Therefore, the developed entrepreneurship-based science module is proven to be valid, practical, and effective in enhancing students’ creative thinking skills and can be easily implemented in science learning
FORMULASI DAN UJI KARAKTERISTIK STABILITAS FISIK SEDIAAN GEL SUNSCREEN EKSTRAK ETANOL BUAH MERAH (Pandanus conoideus) Khusnul Fitriana; Irwandi Irwandi; A.M. Muslihin
JURNAL ETNOFARMASI Vol. 1 No. 01 (2023): JURNAL ETNOFARMASI
Publisher : Universitas Pendidikan Muhammadiyah Sorong

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36232/jurnalfarmasiunimuda.v1i01.1720

Abstract

Radiasi sinar ultraviolet yang diterima tubuh secara berlebih mengakibatkan pengaruh buruk pada kulit dapat muncul bintik hitam pada kulit, eritema, elastosis, penuaan dini, hingga dapat menghambat sistem kekebalan tubuh menjadi salah satu pemicu kenker kulit. Tumbuhan di papua yang mengandung antioksidan tinggi yaitu buah merah (Pandanus conoideus). Untuk memudahkan masyarakat dalam hal penggunaan, buah merah dapat diformulasikan menjadi sediaan gel sunscreen. Sediaan gel terpilih sebab lebih praktis mudah menyerap, membentuk lapisan film yang mudah dibersihkan dan memberikan efek rasa dingin pada kulit. Tahapan dalam penelitian ini adalah persiapan sampel, formulasi gel sunscreen konsntrasi 10 %, uji karakteristik fisik, uji stabilitas fisik dan uji in vitro sediaan gel sunscreen ekstrak etanol buah merah. Hasil penelitian yang telah dilakukan didapatkan hasil ekstrak kental buah merah sebanyak 154,5 gram dari simplisia kering sebanyak 1000 gram sehingga rendemen ekstrak yang diperoleh adalah 15,45%. Hasil pengujian karakteristik fisik, stabilitas fisik sedian gel sunscreen ekstrak etanol buah merah konsentrasi 10 % baik. Ekstrak etanol buah merah dapat diformulasikan menjadi sediaan gel sunscreen konsentrasi 10 % memiliki karakteristik dan stabilitas fisik baik nilai SPF 23,5474 dengan kemampuan menangkal paparan sinar matahari yang baik.
ANALISIS AKTIVITAS ANTIOKSIDAN FRAKSI EKSTRAK DAUN MIMBA (Azadirachta indica A.Juss) DENGAN METODE DPPH A.M. Muslihin; Ratih Arum Astuti; Irwandi Irwandi
JURNAL ETNOFARMASI Vol. 1 No. 02 (2022): JURNAL ETNOFARMASI
Publisher : Universitas Pendidikan Muhammadiyah Sorong

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36232/jurnalfarmasiunimuda.v1i02.1726

Abstract

Telah dilakukan penelitian dengan judul analisis aktivitas antioksidan fraksi ekstrak daun mimba (Azadirachta indica A.Juss) dengan metode DPPH. Tujuan penelitian ini adalah untuk menentukan aktivitas antioksidan fraksi n-heksan, fraksi etil asetat dan fraksi etanol 70% dari ekstrak etanol daun mimba (Azadirachta indica A.Juss) dengan metode DPPH. Daun mimba diekstraksi dengan metode maserasi menggunakan pelarut etanol 96%. Ekstrak etanol daun mimba (Azadirachta indica A. Juss) di fraksinasi dengan tiga pelarut yang berbeda kepolaran yaitu n-heksan, etil asetat dan etanol 70%. Masing-masing fraksi diuji aktivitasnya terhadap radikal bebas DPPH dan diukur absorbannya menggunakan spektrofotometer visibel pada panjang gelombang 500 nm. Hasil analisis menunjukan bahwa fraksi n-heksan, fraksi etil asetat dan fraksi etanol 70% daun mimba (Azadirachta indica A. Juss) memiliki aktivitas antioksidan dengan nilai IC50 masing-masing 1420,25 ?g/mL , 642, 75 ?g/mL dan 1007,34 ?g/mL
PENETAPAN KADAR FENOLIK TOTAL EKSTRAK ETANOL 70% PELEPAH PISANG AMBON (Musa paradisiaca Var. Sapientum) DARI KABUPATEN SORONG, PAPUA BARAT Mohammad Usman Nur; Ratih Arum Astuti; Angga Bayu Budiyanto; Irwandi Irwandi
JURNAL ETNOFARMASI Vol. 1 No. 02 (2022): JURNAL ETNOFARMASI
Publisher : Universitas Pendidikan Muhammadiyah Sorong

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36232/jurnalfarmasiunimuda.v1i02.1727

Abstract

Penelitian terkait pemanfaatan limbah sudah banyak dilakukan, salah satunya pelepah pisang ambon. Ekstrak etanol pelepah pisang ambon terbukti memiliki efek farmakologi salah satunya sebagai penyembuh luka. Untuk mengetahui tingkat keamanan dan efektivitas sediaan ekstrak pelepah pisang ambon, maka perlu dilakukan beberapa uji spesifik dan non spesifik sebagai upaya untuk menjaga kualitas mutu. Penelitian ini bertujuan mengetahui parameter spesifik yaitu penetapan kadar total fenol ekstrak etanol pelepah pisang ambon dari Kabupaten Sorong, Papua Barat. Penelitian ini termasuk jenis penelitian non eksperimental. Metode ekstraksi yang digunakan adalah maserasi dengan pelarut etanol 70%. Uji parameter spesifik berupa kadar fenolik total dengan analisis kualitatif menggunakan uji tabung dan uji KLT serta analisis kuantitatif menggunakan Spektrofotometer UV-Vis masing-masing dengan pereaksi Folin-Ciocalteu. Hasil penelitian parameter spesifik ekstrak etanol pelepah pisang ambon dari kabupaten Sorong, Papua Barat adalah sebagai berikut: hasil uji tabung dan uji KLT menunjukkan bahwa ekstrak etanol pelepah pisang ambon mengandung senyawa fenolik, flavonoid, tanin, dan saponin ; hasil penetapan kadar berupa kadar fenolik total sebesar 15,42 ± 0,159 mg GAE/g ekstrak. Parameter standar umum ekstrak tanaman obat berupa parameter spesifik uji kandungan kimia ekstrak pada penelitian ini secara umum telah memenuhi ketentuan yang ditetapkan oleh Farmakope Herbal Indonesia.
Analysis of Factors Influencing Exports in 5 ASEAN Countries Using a Moderation Approach Andi Isra’ Amalia; Sri Astuty; Abdul Rajab; Muhammad Syafri; Irwandi Irwandi
International Journal of Economics and Management Sciences Vol. 3 No. 1 (2026): February : International Journal of Economics and Management Sciences
Publisher : Asosiasi Riset Ekonomi dan Akuntansi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/ijems.v3i1.1153

Abstract

This study investigates the factors influencing export performance in five ASEAN countries Indonesia, Malaysia, the Philippines, Singapore, and Thailand during the 2014-2023 period. The topic is highly relevant given the vital role of exports in sustaining monetary stability and promoting long-term economic growth. The novelty of this research lies in its integrated approach, which simultaneously examines key export-related macroeconomic variables, namely foreign direct investment and inflation, while incorporating foreign exchange reserves as a moderating variable an approach that remains limited in existing ASEAN-focused studies. This analysis uses secondary data obtained from the World Bank and processed using panel data regression methods, including the Common Effect Model, Fixed Effect Model, and Random Effect Model, strengthened by a Moderated Regression Analysis (MRA) approach. The results show that foreign direct investment and inflation significantly influence foreign exchange reserves. Furthermore, foreign exchange reserves have been shown to play a strategic role in strengthening the economic resilience of ASEAN countries and can be used as a reference in formulating monetary and international trade policies.
The Influence Of Population, Economic Growth, Government Expenditure On Regional Income (PAD) In South Sulawesi Province Yulianti Yulianti; Basri Bado; Irwandi Irwandi; Sri Astuty; Regina Regina
Jurnal Akuntansi, Ekonomi dan Manajemen Bisnis Vol. 6 No. 1 (2026): Maret : Jurnal Akuntansi, Ekonomi dan Manajemen Bisnis
Publisher : Pusat Riset dan Inovasi Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55606/jaemb.v6i1.9127

Abstract

The objective of the provision of regional autonomy is to diminish the reliance of local administrations on the central government, particularly with regard to financial matters, thereby enabling regions to finance their own operations independently. The objective of this study is to ascertain the impact of population, economic growth, and government expenditure on Regional Original Income (PAD) in South Sulawesi Province. The present study constitutes a quantitative investigation, utilising secondary data from BPS with panel data, constituting time series data for the period 2019-2023, in conjunction with cross-section data from six regencies/cities. In light of the findings from the empirical investigation, it is concluded that the most suitable estimate to be employed in this study is the Common Effect Model (CEM). The findings indicate that all independent variables, namely population, economic growth, and government expenditure, collectively exert a substantial influence on regional original income in South Sulawesi Province. Meanwhile, the results of the t-test demonstrate that the population variable has a probability value of 0.0000, which is less than 0.05. It can be concluded that the population has a positive and significant effect on regional original income in South Sulawesi Province. Moreover, the probability of economic growth is determined to be 0.2502, which is greater than 0.05. This indicates that it exerts minimal influence on regional original income in South Sulawesi Province. Subsequently, the probability value of government expenditure is determined to be 0.0355, which is less than 0.05. This finding indicates that government expenditure exerts a positive and significant influence on local revenue in South Sulawesi province.
Pemodelan Spasial Bahaya Lahar Gunung Api Seulawah Agam Menggunakan Laharz Berbasis Data SRTM dan QGIS Freddy Sapta Wirandha; Putra Putra; Irwandi Irwandi; Khairun Nazli
Jurnal Ilmiah Teknik dan Sains Vol. 3 No. 3 (2026): April : Jurnal Ilmiah Teknik dan Sains (JITS)
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat AKIPBA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62278/jits.v3i3.64

Abstract

Gunung Api Seulawah Agam merupakan gunung api aktif yang memiliki potensi bahaya sekunder berupa aliran lahar, terutama pada musim hujan. Penelitian ini bertujuan untuk mengembangkan model spasial bahaya lahar menggunakan perangkat lunak Laharz yang diintegrasikan dengan Sistem Informasi Geografis (QGIS) berbasis data Shuttle Radar Topography Mission (SRTM). Metode yang digunakan meliputi pengolahan data Digital Elevation Model (DEM), penentuan parameter pemodelan seperti rasio H/L, volume lahar, dan ambang batas aliran, serta simulasi aliran lahar untuk menghasilkan peta zona bahaya. Hasil penelitian menunjukkan bahwa model Laharz mampu merepresentasikan jalur aliran lahar yang mengikuti jaringan sungai utama dan menghasilkan zona bahaya yang konsisten dengan kondisi morfologi wilayah. Integrasi dengan QGIS memungkinkan visualisasi spasial yang informatif dalam bentuk peta distribusi aliran dan zona genangan. Meskipun memiliki keterbatasan dalam merepresentasikan dinamika fluida secara detail, model ini efektif sebagai pendekatan awal dalam pemetaan bahaya lahar. Penelitian ini memberikan kontribusi dalam pengembangan metode pemodelan bahaya vulkanik berbasis data topografi yang sederhana namun aplikatif untuk mendukung kajian mitigasi bencana
PENGARUH PERTUMBUHAN EKONOMI DAN INDEKS PEMBANGUNAN MANUSIA TERHADAP KEMISKINAN DI SULAWESI SELATAN Mutaharatul Uhra; Sri Astuty; Muh Jamil; Irwandi Irwandi; Abdul Rajab
Promosi: Jurnal Program Studi Pendidikan Ekonomi Vol 14, No 1 (2026): Promosi
Publisher : UNIVERSITAS MUHAMMADIYAH METRO

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24127/jp.v14i1.16692

Abstract

Kemiskinan merupakan permasalahan kompleks yang dihadapi oleh berbagai daerah di Indonesia termasuk di Sulawesi Selatan. Pertumbuhan ekonomi sering dianggap sebagai faktor utama dalam menurunkan kemiskinan, sementara Indeks pembangunan manusia mencerminkan kualitas sumber daya manuisa yang berperan dalam meningkatkan kesejahteraan masyarakat. Penelitian ini bertujuan untuk menganalisis pengaruh pertumbuhan ekonomi dan indeks pembangunan manusia terhadap kemiskinan.penelitian ini menggunakan data sekunder dari Badan Pusat Statistik (BPS) dengan pendekatan kuantitatif. Analisis data yang digunakan dalam penelitian ini adalah model regresi linier berganda. Hasil penelitian ini menunjukkan bahwa pertumbuhan ekonomi tidak memiliki pengaruh yang signifikan terhadap tingkat kemiskinan. Sebaliknya, Indeks Pembangunan Manusia memiliki pengaruh yang signifikan terhadap tingkat kemiskinan di Sulawesi Selatan. Oleh karena itu, upaya penanggulangan kemiskinan sebaiknya lebih difokuskan pada peningkatan kualitas sumber daya manusia melalui perbaikan di sektor pendidikan, kesehatan, dan standar hidup. Kebijakan pembangunan yang berorientasi pada peningkatan IPM dinilai lebih efektif dalam menurunkan tingkat kemiskinan dibandingkan hanya mengandalkan pertumbuhan ekonomi semata.
Co-Authors ., Asfryanti A. M. Muslihin Abdul Rajab Ade Aulia Rahman Adlim Adlim Afusa Nidya Kinasih Agni Saraswati Agni Saraswati Akmal Mufardis Alan Ridho Irezalnov Anastasia Caroline Sutandi Andi Isra’ Amalia Angga Bayu Budiyanto Anjania Nanda Pithaloka Annesa Putri Arti Wulandari Astuti, Ratih Arum Bachtiar Firgiawan Wahono Basri Bado Citra Ayni Kamaruddin Dessy Rahmawati Dormina Dormina Dwifani Syuhra Ritonga Edial Rusli Elsa Tri Mukti Erna Kusuma Dewi Freddy Sapta Wirandha G.R. Lono Lastoro Simatupang Genta Sakti Hajjul Kamil Harahap, Mery Silvia Hasian, Muhammad Tsawaby Hilma Pami Putri Ira Yani Eka Putri Ismail Bakrie Isnamaini Isnamaini Jihan Haura Jumani Jumani Khairun Nazli Khaizal Khaizal Khusnul Fitriana Kurniawan Adi Saputro Kusrini - Loli Safitri Lukman Hardia Marhenna Uzra Mega Sari Aprianiarti Melani, Melyann Michael Steve Joshua Sinurat Mikke Susanto Mohammad Usman Nur Muh jamil Muhammad Fajar Apriyanto Muhammad Muhammad Muhammad Syafri Mutaharatul Uhra Najwa Zakiyya Naufal Akbar Nopriyeni Nopriyeni Novan Jemmi Andrea Novan Jemmi Andrea Opida Nengsih Oscar Samaratungga Pamungkas Wahyu Setiyanto Prasetyo Wicaksono Achmad Putra Putra Putri Novita Taniardi Rachmasari, Novita Reflinda, Reflinda Regina . Regina Regina Riki Maulana Rosa, Amelia Rusli, Kevin Sembiring, Rasman Gunadi Septria, Anggun Siti Aisyah Sitorus, Friska Ernita Soeprapto Soedjono Sri Astuty Sugeng Riyanto Sulaimawan, Deddy Suparno Suparno Suryati Suryati Syahrul Syahrul SYAMSU ALAM Tobara, Sevenia Veralia, Erlin Wat Yurismawati Widia Wulandari Yulianti Yulianti Zulfa Mufidah Rahmayati