Udowong, Effiong Udowong, and Abiam, Patrick Obere. “Effect of Ethnomathematics-Based Teaching Approach on Senior Secondary Students’ Achievement in Trigonometry”. Journal of Current Research and Studies 2, no. 4 (August 1, 2025): 39–44. Accessed February 9, 2026. https://journalcurrentresearch.com/pub/jcr/article/view/44.