Authors : Bolarinwa, O. T; Abubakar A; Akintokun O. A.; Adedoyin, S. A.; Adeoye, B. A.

Volume/Issue : Volume 10 - 2025, Issue 5 - May

Google Scholar : https://tinyurl.com/49mpsz83

DOI : https://doi.org/10.38124/ijisrt/25may2177

Note : A published paper may take 4-5 working days from the publication date to appear in PlumX Metrics, Semantic Scholar, and ResearchGate.

Abstract : This study examined the effect of Problem-Based Learning (PBL) on secondary school chemistry students’ achievement in the Law of Electrolysis in Oyo Town, Nigeria. Despite the importance of chemistry as a foundational science subject, students’ performance in topics like electrolysis has persistently remained low, attributed to its abstract nature and the predominance of conventional, teacher-centered instructional strategies. A quasi-experimental design, involving non- equivalent control and experimental groups with pre-test and post-test measures, was adopted. A total of 58 Senior Secondary II Chemistry students from two purposively selected public secondary schools participated in the study. The experimental group received instruction through PBL, while the control group was taught using the traditional lecture method. Data were collected using the Electrolysis Accomplishment Test (EAT) and analyzed using Analysis of Covariance (ANCOVA). The results revealed a significant main effect of PBL on students’ achievement in the Law of Electrolysis (F (1, 55) = 8.043, p < 0.05, η2 = 0.838), with students in the PBL group outperforming those in the control group. Additionally, a significant interaction effect of teaching method and gender was observed (F (1, 53) = 43.944, p < 0.05, η2 = 0.914), though the gender-based performance difference within each group was not statistically significant. The findings affirm the effectiveness of PBL in enhancing students’ conceptual understanding and academic performance in challenging chemistry topics, regardless of gender. The study recommends integrating PBL into secondary school chemistry curricula and promoting the professional development of teachers in learner-centered instructional approaches.

Keywords : Problem-Based Learning, Chemistry Achievement, Law of Electrolysis, Secondary School, Gender, Nigeria.

References :

1. Abd Elgadir, I. B. E., Lahodin, S., & Mohd Nadzir, Z. B. (2023). The Lecture Method, its steps, and its educational aspects in teaching Arabic to non-native speakers. International Journal of Academic Research in Business and Social Sciences, 13, 1798-1805.
2. Aidoo, B., Boateng, S. K., Kissi, P. S. and Ofori, I. (2016). Effect of Problem-Based Learning on Students’ Achievement in Chemistry. Journal of Education and Practice, 7(33), 103-108.
3. Alaagib, N. A., Musa, O. A. & Saeed, A. M. (2019). Comparison of the effectiveness of lectures based on problems and traditional lectures in physiology teaching in Sudan, BioMed Central Medical Education 19, 365.
4. Balemen, N., & Keskin, M. Ö. (2018). The effectiveness of Project-Based Learning on science education: A meta-analysis search. International Online Journal of Education and Teaching, 5(4), 849-865.
5. Fakai, U. R., Namagare, I. M., Abdullahi, Z. and Dabai, N. U. (2023). The role of science education as a tool for promoting national security for sustainable development in Nigeria. International Journal of Education and Life Sciences (IJELS), 1(2), 115-128.
6. George C. O., Ezeador, C. N. & Ezeanolue, A. O. (2024). Philosophy of teaching: exploring various teaching methods for improved education in Nigeria. Nnadiebube Journal of Philosophy, 7(3), 15-24.
7. Mukembo, S. C., Edwards, M. C., & Robinson, J. S. (2023). Students’ acquisition of agricultural and entrepreneurship (agripreneurship) knowledge and skills: Does instructional approach and their sex matter? Journal of International Agricultural and Extension Education, 30(3), 7-30.
8. Murniningsih, Muna, K., & Irawati, R. K. (2020). Analysis of misconceptions by four tiertests in electrochemistry, case study on students of the chemistry education study program UIN Antasari Banjarmasin, Journal of Physics: Conference Series, 1440(1),0–6.
9. Nwambo, Y. P., Muritala, I. K., Otaraku,I. J. & Kuye, A. (2022). "Critical thinking approach to chemical engineering education in Nigeria. Journal of The Nigerian Society of Chemical Engineers 37.3 67-76
10. Obialor C. O., Mbaegbu S. C., Okonkwo G. I. & Okonkwo H. C. (2022). Science education for national development and scienetific creativity among secondary school students in Nigeria. UNIZIK Journal of STM Education, 5(1), 92-100.
11. Ogweno, P. O., Ongang’a, P. O., & Mbai, M. Q. A. (2024). Teaching methods and gender as determinants of academic achievement of students in the Agriculture subject in Ndhiwa sub-county, Kenya. Journal of Education and Practice, 8(4), 20-41.
12. Sanchita, P. (2023). What is the lecture method of teaching? Classplus Growth Blog, 2023.  https://classplusapp.com/growth/lecture-method-of-teaching/?session=ondemand.
13. Tugce, G. and Sibel, K. A. (2017). The effects of problem-based learning (PBL) on the academic achievements of students studying Electrochemistry. Chemistry Educucation Research and Practice Journal, 18, 78-98.
14. West African Examinations Council (WAEC), The Chief Examiner’s Report on Students' Performance in Senior School Certificate Physics Examination, Lagos, 2012.
15. West African Examinations Council (WAEC), The Chief Examiner’s Report on Students' Performance in Senior School Certificate Physics Examination, Lagos, 2022.
16. Yu, L. & Zin, Z. M. (2023). The critical thinking-oriented adaptations of problem-based learning models: A systematic review, Frontiers in Education, 8, 1139987.