Agah PMP, Ibrahim AA, Shuaibu H. EFFECT OF ACTIVITY-BASED INSTRUCTIONAL STRATEGY ON SENIOR SECONDARY SCHOOL STUDENTS’ ACADEMIC ACHIEVEMENT IN MATHEMATICS IN NUMAN EDUCATION ZONE, ADAMAWA STATE, NIGERIA. bj [Internet]. 2024 Sep. 3 [cited 2026 Apr. 21];. Available from: https://bwjournal.org/index.php/bsjournal/article/view/2292