Shoaga, Opeyemi, et al. “Effects of Teacher Mediation in Play, Mixed-Sex Play and Gender-Segregation in Play on Academic Performance of Low Achieving Pupils”. ANNUAL JOURNAL OF TECHNICAL UNIVERSITY OF VARNA, BULGARIA, vol. 3, no. 1, June 2019, pp. 28-39, doi:10.29114/ajtuv.vol3.iss1.115.