In this study, it was aimed to determine the effect of Plickers, which is one of the Web 2.0 education tools, on success in affix-root teaching to 5th grade students. In the study, random design with pretest-posttest control group, which is one of the real trial models, was used. The study group of the study was determined by homogeneous sampling from the purposeful sampling methods. The study group consisted of 28 students studying in the 5th grade of a secondary school in the district of Yakutiye, Erzurum in the academic year 2019-2020. The 'Achievement Test', developed by the researcher and consisting of 20 multiple-choice questions, was used to measure the success of the students regarding the affix-root subject. The data obtained were analyzed with SPSS 22.0 package program. In the analysis phase of the data meeting the normality assumptions, t-Test for Independent Samples was used, and the non-parametric Mann Whitney U Test was used in the analysis phase of the data that did not meet the normality assumptions. As a result of the study, it was determined there was a significant difference between the pre-test scores of the control and experimental group students in the affix-root test, there was no significant difference between the post-test scores of the control and experimental group students in the affix-root achievement test, and there was a significant difference between the pre-test and post-test scores of the experimental group students in the affix-root achievement test.