Title: Crta i kružnica
Subjects: Teaching, Aids and devices, Shapes, Juvenile literature, Form perception in children, Geometry concept, Shape, Form perception, Croatian language materials, Bilingual, Teaching Materials, Matériel didactique, Formes, Ouvrages pour la jeunesse, Perception des formes chez l'enfant, Géométrie chez l'enfant, Instructional materials