https://www.researchprojecttopics.com/2022/06/15/effect-of-visual-instructional-materials-on-educational-performance-of-junior-secondary-schools-students-in-social-studies-in-yobe-state-nigeria/
EFFECT OF VISUAL INSTRUCTIONAL MATERIALS ON EDUCATIONAL PERFORMANCE OF JUNIOR SECONDARY SCHOOLS STUDENTS IN SOCIAL STUDIES, IN YOBE STATE, NIGERIA