M. Rodionov and Z. Dedovets, Practical Problems as Tools for the Development of Secondary School Students’ Motivation to Learn Mathematics. journal = {International Journal of Educational and Pedagogical Sciences}, [online]. World Academy of Science, Engineering and Technology. August 2017, vol. 130(10). 2430 - 2435 [viewed 20 April 2024]. Available from: https://publications.waset.org/pdf/10008026.