1. Adesoji, F. A., & Babatunde, A. G. (2008). Investigating Gender Difficulties and Misconceptions in Inorganic Chemistry at the Senior Secondary Level. International Journal of African and African American Studies, 2(1), 1-7.
2. Adesoji, F. A., Omilani, N. A., & Dada, S. O. (2017). A Comparison of Perceived and Actual; Students’ Learning Difficulties in Physical Chemistry. International Journal of Brain and Cognitive Sciences, 6(1), 1-8. https://doi.org/10.5923/j.ijbcs.20170601.01.
3. Adigwe, J. C. (1998). Three problem-solving instructional strategies and their effect on Nigerian student’s attainment in chemistry. Research in Education, 60, 54 – 67. https://doi.org/10.1177/003452379806000106.
4. Agogo, P. O., & Onda, M. O. (2014). Identification of Students Perceived Difficult Concepts in Senior Secondary School Chemistry in Oju Local Government Area of Benue State, Nigeria. Global Educational Research Journal, 2(4), 44–49.
5. Aka, E. G., Guven, E., & Aydogdu, M. (2010). Effect of Problem Solving Method on Science Process Skills and Academic Achievement. Journal of Turkish Science Education, 7(4), 13-25.