Influence of Bilingual Instruction on Mathematics achievement and Retention of Junior Secondary School Students in North-East, Nigeria

This study investigated the effect of bilingual (Margi-English) instruction on mathematics achievement, retention, and gender performance among Margi-speaking Junior Secondary School students in North-East Nigeria. A quasi-experimental design involving non-equivalent control groups with pretest and posttest measures was adopted. The sample comprised 231 JS II students selected through simple random sampling from Margi-speaking public Junior Secondary Schools in Adamawa and Borno States. The Mathematics Achievement Test (MAT), validated by experts, was used for data collection. The experimental group received bilingual instruction (Margi-English), while the control group was taught using English only. Data obtained from the pretest, posttest, and retention tests were analyzed using Analysis of Covariance (ANCOVA).Findings revealed that students taught through bilingual instruction achieved significantly higher mathematics scores than those taught in English alone. The use of the mother tongue (Margi) improved students’ retention of mathematical concepts, indicating deeper comprehension and long-term recall. Both male and female students benefited from bilingual teaching, with females performing slightly better, showing that the approach promotes inclusivity and equitable learning outcomes.The study concluded that integrating mother-tongue instruction alongside English enhances comprehension, retention, and overall performance in mathematics. It was recommended that bilingual pedagogy be incorporated into Nigeria’s secondary school curriculum, with adequate teacher training and the development of bilingual instructional materials to support effective classroom implementation.

Bilingual instruction, Margi language, mathematics achievement

1. Agah, M. (2022). Effect of instruction on achievement in mathematics using lexically ambiguous English words among junior secondary schools in Michika/Madagali Local Government Areas, Adamawa State. International Journal of Advance Research and Innovative Ideas in Education, 8(1), 480–487. [Google Scholar] [Crossref]

2. Ali, M., Ihsan, M., & Sherazi, G. (2023). Effect of code-switching on bilingual students’ success in mathematics and language education. Global Language Review, 8(2), 80 – 88. [Google Scholar] [Crossref]

3. Aikenhead, G. S. (2017). Enhancing school mathematics learning through culturally responsive teaching. Journal of Mathematics Education, 10(3), 45–59. [Google Scholar] [Crossref]

4. Akinkuotu, Y. A. (2022). Effects of the use of Yoruba language as a medium of instruction on pupils’ performance in science and mathematics. International Journal of Social Sciences and Education Research Studies, 2(1), 379–384. [Google Scholar] [Crossref]

5. Bermejo, V., Ester, P., & Morales, I. (2021). A constructivist intervention program for the improvement of mathematical performance based on empiric developmental results (PEIM). Frontiers in Psychology, 11, 582805. [Google Scholar] [Crossref]

6. Bravo-Sotelo, M. (2020). Exploring the Tagalog-English code-switching types used for mathematics classroom instruction. Retrieved from [Google Scholar] [Crossref]

7. Brock-Utne, B. (2001). Education for all—in whose language? Oxford Review of Education, 27(1), 115–134. [Google Scholar] [Crossref]

8. Bosas, J., De Leon, K. Panaglima, J., Parez, M., San Juan, R. & Zotomayo, J. (2024). Bilingual instruction practices and student’s performance in teaching –learning mathematics: A case study. International Journal of science and research Archive, 22(1), 1167 – 1178. [Google Scholar] [Crossref]

9. Castro, D., Franco-Jenkins, X. &Chapero-Moreno, L. (2025). The effects of dual language education on young bilingual children’s learning: A systematic review of research. Education Sciences, 15(3), 312. https://doi.org/10.3390/educsci15030312 [Google Scholar] [Crossref]

10. Erling, E., Clegg, J., Rubagumya, C., & Reilly, C. (2021). Introduction: Multilingual learning and language supportive pedagogies in sub-Saharan Africa: Critical insights and practical applications. In Multilingual learning and language supportive pedagogies in sub-Saharan Africa (pp. 1–29). Routledge. [Google Scholar] [Crossref]

11. Ester, P., Moralenda, A., & Morales, I. (2024). Mathematics and language: A one – to – one in bilingual environments. Education Sciences, 14(3), 328. [Google Scholar] [Crossref]

12. Gao, W. (2025). The impact of bilingual education on children: A perspective on the roles of teachers and parents. Communications in Humanities Research. [Google Scholar] [Crossref]

13. Mangila, B. (2018). Pedagogic code-switching: A case study of the language practices of Filipino teachers in English language classrooms. Retrieved from https://files.eric.ed.gov/fulltext/EJ1288199.pdf [Google Scholar] [Crossref]

14. Nkosana, L. (2019). Impact of bilingual instruction on mathematics performance among learners in Botswana. African Journal of Education Studies, 9(2), 63–75. [Google Scholar] [Crossref]

15. Oluwaniyi, S., Azuka, B., Ojo, S., Oloda, F., Jekayinfa, J., &Okwuosa, S. (2024). Effect of bilingual instructional method in the academic achievement of junior secondary school students in mathematics. IJRDO–Journal of Educational Research, 10(2), 27–33. [Google Scholar] [Crossref]

16. Shi, J. (2023). The effect of bilingual education on children’s language development. Lecture Notes in Education Psychology and Public Media, 6, 712 – 717. https://doi.org/10.54254/2753-7048./6/20220653. [Google Scholar] [Crossref]

17. Sakkir, G. Hajrah, H., & Sunra, L. (2024). Translaguaging in mathematics bilingual classroom: Students’ perception. ARRUS Journal of Social Sciences and Humanities, 4(1), 62 – 76. [Google Scholar] [Crossref]

18. Trudell, B. (2016). The impact of language policy and practice on children’s learning: Evidence from Eastern and Southern Africa. UNICEF. [Google Scholar] [Crossref]

19. UNESCO. (2017). Accountability in education: Meeting our commitments. UNESCO Global Education Monitoring Report. [Google Scholar] [Crossref]

20. Volmer, E., Grabner, R. H., &Saalbach, H. (2018). Language switching costs in bilingual mathematics learning: Transfer effects and individual differences. Zeitschrift für Erziehungswissenschaft, 21, 71–96. [Google Scholar] [Crossref]

21. Vygotsky, L. S. (1978). Mind in society: The development of higher psychological processes. Harvard University Press. [Google Scholar] [Crossref]

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