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Efendi, Ismail
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Journal : PAIDAGOGIA

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The Effect of The Project-Based Learning (PjBL) Model on Students' Cognitive Learning Outcomes: Weni Rostakina; Ismail Efendi; Sri Nopita Primawati
PAIDAGOGIA: Jurnal Inovasi Pendidikan dan Pembelajaran Vol. 2 No. 2 (2025): December
Publisher : Lombok Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.63757/pjipp.v2i2.48

Abstract

This study investigates the effect of the Project-Based Learning (PjBL) model on students' cognitive learning outcomes, compared with Problem-Based Learning (PBL), in senior high school biology. The research was motivated by persistently low cognitive achievement and teacher-centred practices observed at SMA Negeri 3 Selong, where many Grade X students scored below the minimum mastery criterion and struggled to construct coherent scientific arguments. A quantitative quasi-experimental design with a non-equivalent control group pretest–posttest design was employed. The population consisted of all Grade X students (N = 84), with purposive sampling used to select two intact classes: X-8 as the experimental group (PjBL; n = 21) and X-7 as the control group (PBL; n = 21). The experimental class engaged in an authentic project constructing aquascapes from recycled jars, while the control class followed PBL-based instruction on the same content. Cognitive learning outcomes (C1–C4) were measured using a multiple-choice and an essay test. Assumption checking using the Shapiro–Wilk and Levene's tests indicated that posttest data met the requirements for parametric analysis. An independent-samples t-test on posttest scores revealed a statistically significant difference between groups (p = 0.001), with the PjBL class outperforming the PBL class by an average of 17.476 points. These findings demonstrate that PjBL has a significant and positive impact on students' cognitive learning outcomes in biology and is more effective than PBL in enhancing lower- and middle-order cognitive processes. The study recommends systematic integration of PjBL in science classrooms and further research with larger, multi-site samples, including additional outcome variables such as motivation, critical thinking, and creativity.
Co-Authors Ade Kurniawan Afriani, Miska Afriani, Miskah Afrianty, Miskah Agus Ramdani Ahzan, Sukainil Aida Fitria Akhmad Sukri Ali Imran Alkautsar, Esar Arifin, Ahmad Aris Asriwati, Asriwati Baiq Asma Nufida Baiq Muli Harisanti Baiq Muli Harisanti Bestin Valentina Hulu Dewi Hardiyanti Dharmawibawa, Iwan Doddy Endang Maryanti Eni Kurniati, Eni Erna Khairani Esty, Rien Fathita, Afrilla Styva Febriani, Puput Firdaus, Laras Fitri Rahmawati Fitriani, Arifah Devi Fitriani, Herdiyana Fitriani, Niza Fitriani, Niza Hardiyanti, Dewi Harisanti, Baiq Muli Harisanti, Baiq Muli Hikmah, Sari Lailatul Hilma Muzni I Wayan Karmana, I Wayan Ida Royani Ida Yuliani Ika Nurani Dewi Immy Suci Rohyani Imran Muliadi Indrilia, Agnes Islami, Izwaldi Ita Chairun Nissa Marnita Marnita Masiah, Masiah Mirawati, Baiq Muhammad Sarjan Muliadi, Imran Nasution, Ramadhani Syafitri Ni Kadek Dwityasari Anggraeni Nihla Utami Niza Fitriani Norma Lita Sari Nur Aini Oktaffi Arinna Manasikana Primawati, Sri Nopita Puspita Dewi, Puspita Rahmadhani, Putri Ramadhanni Syafitri Nasution Sabrun, Sabrun Safitri, Mey Elisa Safnowandi Safnowandi Safnowandi Safnowandi Safnowandi Safnowandi Safnowandi, Safnowandi Safnowandi, Safnowandi Saidil Mursali Septiana Dwi Utami Setiana Dwi Utami Siti Nurhidayati Siti Rabiatul Adawiyah, Siti Rabiatul siti rabiatul fajri, siti rabiatul Sri Nopita Primawati SUCIKA ARMIANI, SUCIKA Tauriza, Aan Trisnawati, Lilis Utami, Septiana Dwi Welliana, Meli Weni Rostakina Wulandari Wulandari Yuliani, Ida Yuliani, Ida Yunita Roslina Ngongo Yusran Khery, Yusran Zainal Abidin Zainal Abidin