Stem is a new educational model in the world which integrated many subjects and skills helping students to develop and integrate well in their lives. Stem education is basically understood to equip students with the necessary knowledge and skills related to the fields of science, technology, engineering and mathematics. Experiential learning activities for students in directions of stem education help students combine the scientific and mathematical knowledge to solve the practical problems. In experiential learning activities, students based on combining the knowledge of various education fields and skills to apply in reality and participate in the service activities for communities under the guidance and organization of their teachers. This paper focuses on the designing of experiential learning activities to develop the core skills of primary students with some main contents such as: overview of stem education, experiential learning activities and experiential learning activities for students in directions of stem education; designing the experiential learning activities in direction of stem education at primary schools; for example about the experiential activities in direction of stem education at primary schools,… Published under licence by iop publishing ltd.