Osuafor A, Njoku C. EFFECT OF PRIOR KNOWLEDGE OF BEHAVIOURAL OBJECTIVES ON MATHEMATICS ACHIEVEMENT OF HIGH AND LOW MENTAL ABILITY SECONDARY SCHOOL STUDENTS IN IMO STATE, NIGERIA. pijss [Internet]. 2016 Jan. 1 [cited 2024 Apr. 29];2(1):255-64. Available from: https://grdspublishing.org/index.php/people/article/view/314