TY - CPAPER TI - Upper Secondary Students’ Impasses During Joint Problem-solving in a “thinking Classroom” AU - Andreassen, Fannie Skoland AU - Nortvedt, Guri A. AU - Selling, Alexander Jonas Viktor T2 - Proceedings of the International Group for the Psychology of Mathematics Education, Volume 1 PB - Psychology of Mathematics Education (PME) PY - 2026 SP - 59 EP - 66 SN - 2790-3648 KW - Thinking classroom KW - Problem-solving KW - Impasses UR - https://www.igpme.org/publications/RR_PME49/rr/andreassen-upper-secondary-students-impasses-during-joint-problem-solv/ ER -