The industrial phase is the growth and development phase that must be achieved by school-age children. If it is hampered, it will cause feelings of inferiority and lack of self-confidence to arise, so it will have an impact on the child's development at a later stage. Stimulation of development is very important to do so that deviations do not occur. This activity was carried out at SD Inpres Maen Wineru Village, East Likupang District, North Minahasa Regency, North Sulawesi. Stimulation is given related to 7 aspects of psychosocial development, namely motor, cognitive, language, emotion, personality, moral and spiritual. The method used is in the form of education in the form of lectures, demonstrations (exercise & stimulation), and discussion (questions and answers). The activity was attended by 16 participants who were divided into 4 groups in the implementation of stimulation. As a result, there is an increase in development in every psychosocial aspect by 100%. So, it is expected that school-age children have maximum readiness in facing the next phase of development, namely adolescence.