Sanja Matijašević was born in 1976 in Kruševac. She graduated from the Faculty of Physics of the University of Belgrade, majoring in general physics. She worked as a physics teacher at Kruševac High School, and since 2006 she has been employed at the Ministry of Education. She is the author of interactive books for children that lead the youngest to new knowledge through play and motivate them to explore the world around them. Her books "Bottomless Bucket" and "The Silly Bottle" were published in Vietnam, Colombia (for the territory of South America), and this autumn they are expected to be published in Turkey. The supporter is of the opinion that children learn best through play, more precisely when they are not aware that they are in the process of learning. It combines the fun and educational function of the book from the sincere conviction that there is no big difference between playing and learning.