Olufunmilayo K. Amoo and Benson A. Adegoke 2020. Effect of Combined Instructional Techniques on Learners’ Academic Achievement and Practical Skills in Biology in Ibadan. The African Journal of Behavioural and Scale Development Research. 2, 1 (Feb. 2020). DOI:https://doi.org/10.58579/ajbsdr.v2i1.55.