This work is licensed under a
Creative Commons Attribution 4.0 International License
 Ali, A. (1996). Fundamental of research in education. Meks Publishers, Awka, Nigeria, p.31.
 Ezeudu, F.O. (1995). The effect of concept mapping on students achievement, interest and retention in basic studies. Unpublished Ph. D Thesis, Faculty of Education, University of Nigeria, Nsukka.
 FRN, (2004). National policy on education. 4th edition, Pelcam Press, Abuja, Nigeria, p.22.
 Havva, V. and Cemal, V. (2008). Concept mapping in Turkish grammar instruction: A quantitative and qualitative research study, World Applied Science Journal, 5(3), 367-377.
 Ijoh, G.O., Famiwole, R. and Denco, E. (1996). Principles and methods of teaching. Restoration Publishers, Nsukka, Nigeria, p.52.
 Imoko, B.I. and Agwagah, U.N.U. (2006). Improving students interest in Mathematics through the concept mapping technique: A focus on gender, Journal of Research in Curriculum and Teaching, 1(1), 30-38.
 Kinchin, I.M. (2000). Using concept maps to reveal understanding: A two-tier analysis,. School Science Review, 81, 41-46.
 Nekang, F.N. (2004). Effect of concept mapping on students achievement and interest in elementary probability in Biu division of Cameroon. Unpublished M. Ed Thesis, University of Nigeria, Nsukka.
 Nworgu, B.G. (2003). Educational measurement and evaluation. Theory and Practice. University Trust Publishers, Nsukka, Nigeria, pp.15-17.
 Okam, C.C. (2000). Approaches in the teaching of social studies. Outrite Publishers, Onitsha, Nigeria, p.40.
 Ozden, M. and Gultekin, M. (2008). The effect of brain-based learning on academic achievement and retention of knowledge in science course, Electronic Journal of Science Education, 2(1), 20-25.
 Shamija, T.A. (2008). Social studies education. An introductory text. Academic Press Ltd., Makurdi, Nigeria, pp.20-25.
 Utulu, R.E. (2007). Using concept mapping for effective teaching in nursery/primary and secondary schools, Benue State University Journal of Education, 8(1), 207-219. ( Received 07 April 2015; accepted 28 April 2015 ).