ŠIRKA, JÁN. “Analysis of Practical Assignments of Technical Olympiads from the Point of View of the Professional Orientation of Primary School Pupils”. Journal of Education, Technology and Computer Science 25, no. 3 (September 30, 2018): 346–351. Accessed July 22, 2024. https://journals.ur.edu.pl/jetacomps/article/view/5876.