The purpose of the research is to help students realize the concept of division and understand it well by experiencing the integration of mathematical games and teaching activities. To intrigue students' learning motivation, the instruction design focuses on outdoor activities first and includes classroom instructions, which are three classes in total. In addition, accompanying with the worksheets (three in all) which are designed according to the learning situation, students should finish a group of questions that go from simple to difficult through discussion. It's hoped that it would assist teachers in solving students' problems and improve their problem solving abilities effectively. The research shows that students like learning by playing games very much. Besides, by blending games with teaching, students can present their solving process with schematic ways while facing such problems. It not only enables them to develop suitable solving strategies but also helps them to understand the abstract concept of division.