@inproceedings{pme336559-ilomanniprimarystudent,
  title={Primary Students’ Mathematics Related Costs},
  author={Ilomanni, Pia and Haataja, Eeva and Niemi, Laura and Radišić, Jelena and Laine, Anu},
  booktitle={Proceedings of the International Group for the Psychology of Mathematics Education, Volume 1},
  year={2026},
  pages={675--682},
  publisher={Psychology of Mathematics Education (PME)},
  issn={2790-3648}
}