Saka, A.O. and Onanuga, P.A. 2019. Teacher Effectiveness of Some Selected Secondary Schools’ Science, Technology, Engineering And Mathematics Subjects: Implication for Sustainable Development Using Science Education. Journal of Education in Black Sea Region. 5, 1 (Dec. 2019), 3–14. DOI:https://doi.org/10.31578/jebs.v5i1.183.