'The first math game in my life, where math becomes easier in my life, I'm doing math!' Doljabi Mathematics is a math game program that solves the concepts and principles of mathematics in an easy and fun game. This application is an application that is provided to help the learning of stonework math. You can learn math concepts in a fun way by touching and moving things you learned with picture books. In the application, picture book animation, nursery rhyme animation, and Doljasong are provi