Kajuru, Y. K. “THE EFFECT OF USING FORMULA APPROACH ON THE TEACHING OF MATHEMATICAL CONCEPTS IN SENIOR SECONDARY SCHOOLS IN KADUNA STATE”. Sokoto Educational Review 10, no. 2 (September 10, 2020): 211–219. Accessed June 8, 2025. https://www.sokedureview.org/index.php/SER/article/view/407.