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Journal : Journal of Natural Science and Integration

Development of Contextual Environmental Issues-Based Ecology E-Books to Improve Students' Critical Thinking Skills Falah, Fajrul; Moreira, Ilidio Ximenes; Af'idah, Noer; Wijayadi, Andri Wahyu; Rochim, Roudhoutul Aulia
Journal of Natural Science and Integration Vol 9, No 1 (2026): Journal of Natural Science and Integration
Publisher : Universitas Islam Negeri Sultan Syarif Kasim Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24014/jnsi.v9i1.39257

Abstract

This research aims to develop a valid and effective contextual environmental issue-based ecology e-book to improve students' critical thinking skills. This research uses a Research and Development (R&D) approach with a 4D (Define, Design, Develop, Disseminate) model. The research population consists of junior high school students, and the test subjects (as the unit of analysis) comprise 61 grade VII students from two classes. This sample size was selected to ensure data representativeness and to more comprehensively measure the effectiveness of the media. Data collection techniques include validation sheets by subject matter experts, media experts, and science teachers, as well as pretest and posttest instruments based on critical thinking indicators. Data were analyzed using descriptive statistics, N-Gain analysis, and classical learning mastery percentage. The validation results showed an average score of 3.70, indicating high feasibility. The effectiveness test results showed an increase in the average score from 55 to 75, with an N-Gain of 0.44 (medium), and an increase in classical learning mastery from 31% to 85%. This study offers novelty by systematically mapping six critical thinking indicators into the interactive features of the e-book that specifically address local environmental issues. Thus, the developed e-book is highly feasible and proven to be effective as an innovative independent teaching material in science learning. Keywords: ecology e-book, contextual environmental issues, critical thinking skills
Co-Authors Achmad Roziqi Adilla, Asmia Safaatul Adillah, Ar Rumaisha Adiputra, Ristiyanto Af'idah, Noer Af’idah, Noer Agustina, Rizqa Dwi Ahmad, Nur Fauzan Aini, Zinnur Al Gazali, Rifyal Ghaizi Al-Faathir, Fawwaz Ezar Ananda Prayogi andriani, merry Anggraini, Nilla Putri Anjelita, Indriani Putri Anna Fitriati Aprinus Salam Ardyanti, Adinda Tiara Arido Laksono Ashari, A Az Zukhruf, Alif Azhary, Muhammad Royyan Faqih Azmia, Ghefira Raras Nur Bagus Nuari Priambudi Basya, Aulia Azhari Budianto, Khansa Fahira Cahyani, Fitri Dwi Cikal Nugroho, Kacuk Constantina, Findy Darunnafis, Moh. Khazani Devie, Shofia Hanum Articha Djati, Isworo Dwinata, Anggara Ekananta, Arry Fajri, Aprianur Firdaus, Nurman Hartuti, Sugi Haryanti, Peni Henny Pratiwi Adi Hidayati, Athi' Hidayati, Athi’ Hilma, Alanafsi Wahdini Ilidio Ximenes Moreira, Ilidio Ximenes Imam Sopingi Indah Palupi Ira Lestari Iriani, Rossi Nur Isnawati Isnawati Istiani, Ratna Ayu Istighfah, Jafifah Mega Nur Jannah, Siti Miftakhul Junelmi, Thecy Jurkovič, Martin Kandimba, Enock Michael Ken Widyatwati Khumaira, Balqis Kukuh Andri Aka Lina Arifah Fitriyah Lutanto, Agus M. Abdullah Ma'arif, Syamsul Mahmuda, Siti Risyda Maimunah, Karismatul Marwini Marwini Mashur Mashur, Mashur Maulani, Yasmin Maulida, Firosyi Maulidah, Kharisma Maya Mega Fatimah Rosana Mohamad Izzur Maula Mohamad Waluyo Muhammad Arifin Muhammad Subhan Muhyidin Musfiroh, Anita Nada, Elysa Qothrun Naya, Salsa Nabila Aisya Niken Sylvia Puspitasari Nur Hayati Nur Khasanah Nur Kuswanti Nurzahra, Shafa Zahirah Octaviano, Bagas Oktaffi Arinna Manasikana Pramesti, Amanda Rafaelya Pratama, Rifka Prihtiantoro, Dedhy Pujianto, Ahmad Pujiharto Pujiharto Puspita, Yuhana Putri Mayang Sari, Putri Mayang Qomariyah, Siti Istiul Qurrotul Uyuni Rahmadani, Revi Ramadhan, M. Rizki Syahrul Rhamadhan, Bintang Fajri Riris Tiani Rochmah, Lilis Nur Roudhoutul Aulia Rochim Salma Salsabila, Dinda Iqlima Sari, Anggi Wulan Sayyaf, Pato Sejati, Sadewa Purba Sekar, Dyah Ayu Septiana, Rinda Shine, Sesilia Angela Sintana, Zaila Siti Siska Desy Fatmaryanti Siswoyo Siswoyo Sugiyanto - Suripto Syahputra, M. Aprilian Taqriri, Zulfan Ubaiyana, Ubaiyana Wanti, Novita Rizka Widyastuti, Fitria Agustin Widyawati, Marta Wijayadi, Andri Wahyu Wikan Sakarinto Yuni K., Kusnul Ciptanila Zulaika , Zulaika