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By Prof. Samuel Agozie Ezeudu, Monday Sampson, Ogochukwu Stella Okafor
International Journal of Studies In Education (IJOSE) Vol. 15 No 2: EFFECT OF CONCEPT MAPPING INSTRUCTIONAL STRATEGY ON STUDENTS’ ACHIEVEMENT AND INTEREST IN SOME VALUE CONCEPTS IN UPPER BASIC EDUCATION SOCIAL STUDIES: IMPLICATION FOR SUSTAINABLE DEVELOPMENT