This study aims to improve children's sequencing (seriation) skills through the use of a spinning wheel media in Group B at TK Negeri Pembina Sungai Pinang. This research is a Classroom Action Research (CAR) using the Kemmis and McTaggart model, which consists of four stages (planning, implementation, observation, and reflection). The subjects of this study were Group B1 children, totaling 16 c…