TY  - BOOK
AU  - Tian, Jing.
AU  - Tian, Jing.
AU  - Siegler, Robert S. 
AU  - Braithwaite, David W. 
TI  - Distributions of textbook problems predict student learning: data from decimal arithmetic 
U1  - DPer 370.15 J826 April - May 2021 v113no. 3-4 
PY  - 2021///
CY  - Washington; 
PB  - American Psychological Association, 
KW  - Psychology
KW  - Arithmetic
KW  - Textbooks
ER  -