TY  - BOOK
AU  - Fosnot,Catherine Twomey
AU  - Dolk,Maarten Ludovicus Antonius Marie
TI  - Young mathematicians at work: constructing number sense, addition, and subtraction 
SN  - 032500353X (alk. paper)
AV  - QA135.5 .F6318 2001
U1  - 372.7 21
PY  - 2001///
CY  - Portsmouth, NH
PB  - Heinemann
KW  - Mathematics
KW  - Study and teaching (Elementary)
KW  - Study and teaching
KW  - sears
N1  - Includes bibliographical references (p. 183-187) and index; Science Books & Films (A.A.A.S.); 8.0; 8.0; Follett Library Resources; Professional; Follett Library Resources
N2  - Explains how children between the ages of four and eight construct a deep understanding of numbers and the operations of addition and subtraction
ER  -