Proizvod vam ne odgovara? Nema veze! Možete nam vratiti unutar 30 dana
S poklon bonom ne možete pogriješiti. Za poklon bon primatelj može odabrati bilo što iz naše ponude.
30 dana za povrat kupljenih proizvoda
This text has two main goals. On the level of theory development, it seeks to clarify emerging models about teaching, learning and problem-solving in maths. On the level of practical problems, it seeks to clarify the nature of important mathematical or scientific understandings and abilities.