Denuga D, Abah J, Mashebe P. Effect of Zone of Proximal Development on the Performance of Learners in Stoichiometry in Selected Secondary Schools in the Zambezi Region, Namibia. ASRJETS-Journal [Internet]. 2016 Jul. 14 [cited 2025 Sep. 17];21(1):216-2. Available from: https://www.asrjetsjournal.org/American_Scientific_Journal/article/view/1744