This work is licensed under a
Creative Commons Attribution 4.0 International License
 Alaku, P.O. (1998). Instructional strategies and its usual aids for teacher's effectiveness. Bichi Journal of Education 2 (1), 114-117.
 Imarhiagbe K. O (1996).
 Iwuji, V.B.C. (1990). Measurement and Evaluation for Effective Teaching and Learning. Onitsha: Summer Educational Publishers.
 Makama, O.M. (2005) Programme Evaluation in Education. Obosi: Pacific Publishers.
 Ohuche, K.O. (1990). Basic Measurement and Evaluation. Onitsha: Africana-Fep Publishers.
 Opara, J. A(2011). The Science Education and Student Achievement in Nigerian Environment: Concerns and Tasks Ahead. Middle-East Journal of Scientific Research. Vol. 7, No. 6, pp.1050-1055.
 Opara,J. A(2014). Education and the Enlightened Society. New Delhi: New Delhi Publishers.
 Opara, J. A and Ejifugha,A. U(2014). Emerging Approach of Teaching School Science Through Inquiry Method,. Journal of Educational and Social Research, Vol. 4, No. 7, p.121.DOI: https://doi.org/10.5901/jesr.2014.v4n7p121
 Opara,J. A(2015). State of Education and Globalization. Saarbrucken-Germany: LAP Lambert Academic Publishing.
 Opara, J. A(2015). Science Education in an Changing Environment. New Delhi: New Delhi Publishers 137.
 Saidu, S (2007) Functional Curriculum for National Economic Empowerment and Development, Nigeria Journal of Science and Educational Research 1(14)265-269.