@inproceedings{pme336559-neckhowtomake4cidvisib,
  title={How to Make 4c/id Visible? an Online Professional Learning Environment for Mathematics Teachers on Diagnosing and Supporting Problem Solving},
  author={Neck, Melanie and Leuders, Timo and Reinhold, Frank},
  booktitle={Proceedings of the International Group for the Psychology of Mathematics Education, Volume 1},
  year={2026},
  pages={1067--1074},
  publisher={Psychology of Mathematics Education (PME)},
  issn={2790-3648}
}