Dr Eucharia Amaka Onu; Dr Chigbu Baptista Chinyere; Dr Benjamin A. Ogwuche. TESTING THE EFFICACY OF CO-OPERATIVE LEARNING STRATEGY ON SENIOR SECONDARY STUDENTS’ ACHIEVEMENT IN PHYSICS IN KABBA BUNU EDUCATION ZONE, KOGI STATE, NIGERIA: IMPLICATIONS FOR EDUCATIONAL ADMINISTRATORS. WT 2026, 35, 497-505.