Abstract-Maths teaching through activities help students learn maths which is abstract in a concrete environment in which students feel comfortable. Concretization of transition from arithmetic that students are already familiar with to algebra that they will experience for the first time through activities is getting more and more important. This study aims to design, implement and assess activities that will ensure 7th grade students' transition from arithmetic to algebra. The study, which is in a semi-experimental design, is carried out with 58 7 th grade students, 30 of them being in experimental group and 28 in control group. A lateral equation testconsisting of 10 open-ended questions was given to students in the study before and after the implementation.Independent sampling t-test was used in the analysis of the data collected. As a result of the analysis, it was found out that activity-based teaching is more effective in teaching equations than traditional teaching method.