TY  - CPAPER
TI  - BEGINNING THIRD-GRADE STUDENTS’ MANIPULATIVE-BASED UNDERSTANDING OF THE PLACE-VALUE POSITION PRINCIPLE FOR TWO-DIGIT AND THREE-DIGIT NUMBERS
AU  - Kaiser, Anna
AU  - Ufer, Stefan
T2  - Proceedings of the International Group for the Psychology of Mathematics Education, Volume 1
PB  - Psychology of Mathematics Education (PME)
PY  - 2026
SP  - 731
EP  - 738
SN  - 2790-3648
KW  - place-value understanding
KW  - place-value position principle
KW  - primary school
KW  - base-ten system
KW  - manipulatives
UR  - https://www.igpme.org/publications/RR_PME49/rr/PME49_RR_499_Kaiser_A/
ER  -