The current study reports the practice at the unit of Life Unit Learning “Lets Craft and Play!: The Cardboard Land.” Students decided to craft “Go-Go Mazes” with cardboard based on their previous experiences of the accommodation learning and the unit named“ Let’s have a fun party.” In order to craft“ Go Go mazes,” they made up for the shortage of cardboard by asking their teachers to bring it to them and discussed how to design and decorate it. At the end of this unit, the students invited the teachers who gave them the cardboard to join“ Go Go Mazes,” and finalized this activity with a great success. Throughout this activity, children became acquiring cooperativeness with other students while increasing good mutual relationships with other friends. From now on, it will be necessary to lead the class that students and teachers cooperate each other by teaching the students how to establish good relationships with people other than their teachers and understand among them by realizing the feelings and thoughts they convey are transmitted appropriately.