![[up]](/style/images/multi_up.png)
Up a levelGroup by: Item Type | No Grouping
Number of items: 1.
Cowan, Richard, Donlan, Chris, Shepherd, Donna-Lynn, Cole-Fletcher, Rachel, Saxton, Matthew and Hurry, Jane (2011) Basic calculation proficiency and mathematics achievement in elementary school children. Journal of Educational Psychology, 103 (4). pp. 786-803. ISSN 0022-0663