The problem of this research is how to improve the cognitive abilities of Group B children through busybook play activities at RQ Insan Madani. The aim of the research is to enhance the cognitive abilities of Group B children at RQ Insan Madani by using busybook media. The subjects of the research are Group B children at RQ Insan Madani who still face challenges in cognitive development aspects. The research method is Classroom Action Research. The classroom action research model that will be used in this study is the Kurt Lewin model. The data collection techniques include direct observation conducted by the researcher, interviews, task assignments, and document analysis. There are three data analysis techniques: the researcher performs data reduction, then presents the data, and finally concludes the data. Based on the research results from the pre-cycle and cycle 1, it can be concluded that through busy book play activities, the cognitive abilities of group B children at RQ Insan Madani can be improved. This is seen from the change in condition when the initial state before the action (pre-cycle) is different from the state after the action in cycle 1.