She was born in 1935, in Emet, Kütahya. She received her academic education in the various villages and cities of Anatolia. She graduated from Atatürk Girls’ High School in Istanbul. For a while, she studied law at Istanbul University. She took external examinations and became a primary school teacher. After working for fifteen years as one, she quit her job in 1977.
She published her first story in a local newspaper at the age of 15 in 1950 and her first book, Bahçıvanın Oğlu in 1963. Since then, she published seventy one books. Among them there are short-story collections and travelogues for children and young people between the ages of 7 and 18. She also wrote more than twenty radio and television plays that have been broadcast or are waiting to be. Apart from her writing, she travels around Turkey to attend book-signing events organized by schools, non-governmental organizations etc. where she finds the chance to meet her readers. Her works are studied in several dissertations at various universities in Turkey.
Dayıoğlu has also researched on the education problems of child workers and on the problems of primary school education. Since 1965, she has written for Cumhuriyet and Milliyet newspapers on these issues. She has presented nearly forty papers on education problems and children’s-youth literature in both national and international conferences. Presently, she focuses on her writing.