Enhancing Chemistry Students’ Academic Achievement in Delta State: A Comparative Analysis of Process-Oriented Guided Inquiry Learning (POGIL), Blended Learning, and Conventional Methods
Abstract
The persistent underperformance of secondary school chemistry students in Nigeria’s public examinations has prompted the need for evidence-based pedagogical innovations. This study examined the differential effects of Process-Oriented Guided Inquiry Learning , Blended Learning, and Conventional Methods on the academic achievement of Senior Secondary II (SS II) chemistry students in Delta State, Nigeria. A quasi-experimental pretest-posttest non-equivalent control group design was adopted. The population comprised 29,409 SS II chemistry students enrolled in government-owned secondary schools in Delta State for the 2024/2025 academic session. A purposive, non-randomized sampling technique was used to select 204 students from four secondary schools, distributed across four treatment groups: POGIL (n = 40), Blended Learning (n = 48), Conventional Methods (n = 61), and Control/Revision (n = 55). Data were collected using a Chemistry Achievement Test , whose reliability was established using Cronbach’s Alpha. Mean scores, standard deviations, and one-way Analysis of Variance with Scheffe’s post-hoc test were used to analyse the data at a 0.05 significance level. Results revealed that students taught via POGIL (X̅ = 48.13) and Blended Learning (X̅ = 46.92) significantly outscored those in the Conventional Methods group (X̅ = 31.25), with the Control group scoring the lowest (X̅ = 10.65). The ANOVA result was statistically significant (F = 3531.717, p ≤ .05). Scheffe’s post-hoc analysis confirmed that POGIL and Blended Learning were equally effective and superior to Conventional Methods. It was recommended that chemistry teachers adopt POGIL and Blended Learning strategies to enhance student achievement, while educational policymakers should invest in digital infrastructure to sustain blended learning in Nigerian secondary schools.
Keywords
POGILblended learningconventional methodsacademic achievementchemistry educationDelta StateNigeriasecondary schoolquasi-experimental
References
Agashua L. O. J., Felix E. I., Olusola E. O, Peter, J. A., & Fadipe B. M., (2025). Impact of blended learning on the academic performance of senior secondary students in Gwagwalada Area Council, Abuja, Nigeria: Implications for Development in Technology & Engineering. Journal of Educational Research and Practice, 7(8). https://doi.org/10.70382/bejerp.v7i8.011 Cao, W. (2023). A meta-analysis of effects of blended learning on performance, attitude, achievement, and engagement across different countries. Frontiers in Psychology, 14, 1212056. https://doi.org/10.3389/fpsyg.2023.1212056 Chakawodza, J. M., Nakedi, M. M., & Kizito, R. N., (2024). Effectiveness of blended teaching on academic achievement in organic chemistry: A case of Grade-12 learners from an underprivileged South African school. International Journal of Learning, Teaching and Educational Research, 23(3). 248-274 https://doi.org/10.26803/ijlter.23.3.13 Chinwendu, O., & Olele, C. N. (2020). Effect of blended learning on students’ retention of physics in federal colleges of education in South East Nigeria. International Journal of Education, Learning and Development, 8(1), 66–76. https://eajournals.org/wp-content/uploads/Effect- of-Blended-Learning-on-Students-Retention-of-Physics-in-Federal-Colleges-of- Education-in-South-East-Nigeria.pdf Dziuban, C., Graham, C. R., Moskal, P. D., & Sicilia, N. (2018). Blended learning: The new normal and emerging technologies. International Journal of Educational Technology in Higher Education, 15(3), 1–16. https://doi.org/10.1186/s41239-017-0087-5 Eberlein, T., Kampmeier, J., Minderhout, V., Moog, R. S., Platt, T., Varma-Nelson, P., & White, H. B. (2008). Pedagogies of engagement in science: A comparison of PBL, POGIL, and PLTL. Biochemistry and Molecular Biology Education, 36(4), 262–273. https://doi.org/10.1002/bmb.20204 Gambari, A. I., Shittu, A. T., Ogunlade, O. O., & Osunlade, O. R. (2017). Effectiveness of blended learning and e-learning modes of instruction on the performance of undergraduates in Kwara State, Nigeria. Malaysian Online Journal of Educational Sciences, 5(1), 25–36. http://irepo.futminna.edu.ng:8080/jspui/handle/123456789/14757 Gao, Q., Tong, M., Sun, J., Zhang, C., Huang, Y., & Zhang, S. (2025). A study of Process-Oriented Guided Inquiry Learning in the blended synchronous science classroom. Journal of Science Education and Technology, 34(1), 103–121. https://doi.org/10.1007/s10956- 024-10155-3 Garrison, D. R., Anderson, T., & Archer, W. (2009). The first decade of the Community of Inquiry framework: A retrospective. The Internet and Higher Education, 13(1–2), 5–9. https://doi.org/10.1016/j.iheduc.2009.10.003 Hanson, D. M. (2006). Instructor’s guide to process-oriented guided-inquiry learning. Pacific Crest. https://pcrest.com/PC/Reflections/issue26/316032. Heilporn, G., Lakhal, S., & Bélisle, M. (2021). An examination of teachers' strategies to foster student engagement in blended learning in higher education. International journal of educational technology in higher education, 18(1), 25. https://doi.org/10.1186/s41239- 021-00260-3 Idul, J. J. A., & Caro, V. B. (2022). Does process-oriented guided inquiry learning improve students’ science academic performance and process skills? International Journal of Science Education, 44(12), 1994–2014. https://doi.org/10.1080/09500693.2022.2108553 , Jummaro, M. R., Mulyani, S., Widhiyanti, T., & Wiji. (2024). Review of chemistry learning strategy based on Process Oriented Guided Inquiry Learning . KnE Social Sciences, 9(13), 151–161. https://doi.org/10.18502/kss.v9i13.15915 Kenni, A. M. (2020). Analysis of students’ performance in chemistry in the West African Senior School Certificate Examination and National Examination Council from 2015–2018. International Journal of Research and Analytical Reviews, 7(1), 35–49. https://www.coursehero.com/file/226698513/ijrar-issue-20544223pdf/ Madiclum, P. C., & Prudente, M. (2025). A Meta-analysis of the Effectiveness of Process-Oriented Guided Inquiry Learning on Students’ Academic Achievement. International Journal of Humanities and Social Sciences, 17(2), 36–51. https://doi.org/10.26803/ijhss.17.2.4 Moemeke, C. D., Chukwunenye, J. N., & Malik, N. A. (2025). Understanding the theoretical foundations of inquiry-based learning: Pivot for productive science education in Africa. Educational Considerations, 50(3). https://doi.org/10.4148/0146-9282.2446 Moog, R. S., Creegan, F. J., Hanson, D. M., Spencer, J. N., & Straumanis, A. R. (2006). Process- oriented guided inquiry learning: POGIL and the POGIL Project. Metropolitan Universities, 17(4), 41–52. https://journals.indianapolis.iu.edu/index.php/muj/article/view/20287/19880 Nkanyani, T. E., Mudau, A. V., & Sikhosana, L. (2024). Teaching and learning of physical sciences grade 11 in rural schools through rural blended learning strategy. Eurasia Journal of Mathematics, Science and Technology Education, 20(3). https://doi.org/10.29333/ejmste/14295 Nkedishu V. C. (2022). Administrative Efficiencies and Teachers Productivity in Delta State Secondary Schools, Nigeria. Asian Journal of Education and Social Studies, 26(3), 1–9. https://doi.org/10.9734/ajess/2022/v26i330627 Nkedishu V. C. and Okonta V. (2023) Transforming Teaching from Conventional to Digital Learning: Students Sensitivity in Higher Education, British Journal of Education, Vol.11, Issue 4, 18-36. https://doi.org/10.37745/bje.2013/vol11n41836 Nwafor, S. C., Ibe, F. N., & Muoneke, N. M. (2022). Optimizing information and communication technology applications in chemistry learning. Journal of Research in Instructional, 2(2), 151–162. https://www.semanticscholar.org/reader/f47ae05134dacfc142a1e8a4cbbc0e946c5ba57f Nwafor, S. C., Okonkwo, H. C., & Onuigwe, B. U. (2023). Enhancing secondary school students’ achievement in chemistry using collaborative instructional strategy. Journal of Digital Learning and Education, 3(3), 210–217. https://doi.org/10.52562/jdle.v3i3.818 Omosor, R. M., & Etinagbedia, A., (2025). Comparative Effects of Concept Mapping and Lecture Instructional Methods on Students’ Academic Achievement and Retention in Chemistry. Jigawa Journal of Educational Research, 4(2). https://jjer.com.ng/index.php/jjer/article/view/82 Omosor, R. M., (2023). Effect of Mind-Mapping Strategy on Senior Secondary School Chemistry Students” Academic Achievement and Critical Thinking. International Journal of Academic and Applied Research , 7(3), 31–44. http://ijeais.org/wp- content/uploads/2023/3/abs/IJAAR230305.html Omosor, R. M., Ajaja, P. O., & Kpangban, E., (2024). A Comparative Study of the Effectiveness of Blended Learning and Lecture Methods on Chemistry Students' Scholastic Ability in Delta State. International Journal of Research Publication and Reviews, 5(2), 2497-2505. https://ijrpr.com/uploads/V5ISSUE2/IJRPR22835.pdf , Omwirhiren, E. M. (2015). Enhancing Academic Achievement And Retention In Senior Secondary School Chemistry Through Discussion And Lecture Methods: A Case Study Of Some Selected Secondary Schools In Gboko, Benue State, Nigeria. Journal of Education and Practice, 6(21), 155–161. https://www.iiste.org/Journals/index.php/JEP/article/view/24225 Omwirhiren, E. M. (2015). Enhancing academic achievement and retention in senior secondary school chemistry through discussion and lecture methods: A case study of some selected secondary schools in Gboko, Benue State, Nigeria. Journal of Education and Practice 6(21), 155–161. https://files.eric.ed.gov/fulltext/EJ1079117.pdf Oruaro, E. M., Ajaja, O. P., & Ovuworie, O. O., (2026). Effects Of Cooperative Learning Instructional Strategy And Lecture Method On Students” Achievement, Retention, And Attitude Towards Biology In Delta South Senatorial District. International Journal of Innovative Social & Science Education Research 14(1): 64-75. https://doi.org/10.5281/zenodo.18253552 POGIL Project. (2024). What is POGIL? Retrieved from https://pogil.org/what-is-pogil Saidu, A., Yahaya, U., Illela, D., Mutiu, A., Lasisi, G., & Olugbemiga, J. (2024). Assessment of causes of students” failure in chemistry in West Africa Examination Council in Suru Local Government Area of Kebbi State, Nigeria. Journal of Progressive Research in Engineering Management And Science, 04, 1607–1611. https://doi.org/10.58257/IJPREMS37880 Sen, S. (2024). Process oriented guided inquiry learning: A systematic review using bibliometric analysis. Biochemistry and Molecular Biology Education, 52(2), 188–197. https://doi.org/10.1002/bmb.21803 Suhendi, A., & Purwarno. (2018). Constructivist learning theory: The contribution to foreign language learning and teaching. KnE Social Sciences, 3(4), 87–95. https://doi.org/10.18502/kss.v3i4.1921 Tijani, B. E. (2025). Impact of open inquiry instructional strategy on secondary school students’ academic achievement and conceptual knowledge in chemistry across genders in Osun State, Nigeria. African Journal of Teacher Education, 14(1). https://doi.org/10.21083/ajote.v14i1.8256 Ugwuanyi, C. S., Eryilmaz, N., & Pietsch, M. (2026). Four decades of change: The evolution of teaching styles in Nigerian science education (1983–2023). International Journal of Educational Development, 121, 103504. https://doi.org/10.1016/j.ijedudev.2026.103504 Walker, L., & Warfa, A. R. M. (2017). Process oriented guided inquiry learning (POGIL®) marginally effects student achievement measures but substantially increases the odds of passing a course. PLOS ONE, 12(10), e0186203. https://doi.org/10.1371/journal.pone.0186203 Yoade, F., & Asaaju, O. (2024). Effectiveness of station-rotation and flipped-blended learning strategies in improving study habits and academic performance of secondary school biology students in Osun State, Nigeria. African Journal of Teacher Education, 13(3), 133–145. https://doi.org/10.21083/ajote.v13i3.7695
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