Negedu SA. EFFECT OF ADVANCE ORGANIZER ON STUDENTS’ ACHIEVEMENT IN SECONDARY SCHOOL BIOLOGY IN DEKINA LOCAL GOVERNMENT AREA OF KOGI STATE. JOSTMP [Internet]. 2023 Jan. 1 [cited 2024 Sep. 16];1(1):217-26. Available from: https://jostmp-ksu.com.ng/index.php/jostmp/article/view/25