The activity and creative work of Ukrainian activist, writer, teacher Ivanna Blazhkevych (1886 - 1977) in the context of the development of pre-school education as a factor of strengthening the state have been thoroughly investigated in the article. The article thoroughly investigates the activity and creativity of Ukrainian activist, writer, pedagogue Ivanna Blazhkevych (1886-1977) in the context of pre-school education development. For the first time the periodization of her life path and development of pedagogical ideas. The basic directions of pedagogical and cultural-educational activity and creativity of I. Blazhkevych have been clarified: pre-school-pedagogical (organization of pre-school institutions; substantiation of methods of pre-school education; determination of requirements for kindergarteners-educators); educational (participation in the elimination of illiteracy), ethnographic (collection of ethnographic material: recording folk songs, legends, sayings); national-patriotic (preservation of national traditions, mother tongue); guardianship (assistance to local war victims, prisoners of war, establishing orphanages for children); economic (founding cooperatives; working as a director of the district union of cooperatives in Ternopil), literary (writing books for children).