RESEARCH METHODOLOGY
Research Design
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The study applied the quasi- experimental design to investigate the effect of Prezi presentation software on students' vocabulary learning. Shuttleworth (2008) stated that' Quasi-experimental design is a form of experimental research used extensively in the social sciences and psychology and it involves selecting groups, upon which a variable is tested, without any random pre-selection processes'(P.1). The research has one independent variable which is using Prezi presentations and one dependent variable which is enhancing students' vocabulary learning. In order to examine students' vocabulary learning, Pretest - posttest was used. The experimental group received a pretest, treatment and posttest, but the control group received pretest and posttest without treatment.