How children learn number concepts :
Richardson, Kathy
How children learn number concepts : a guide to the critical learning phases / Kathy Richardson - Bellingham, Washington : Math Perspectives, ©2012. - xvi, 204 p. : ill. ; 23 cm.
include Bibliography
9780972423809
Mathematics --Study and teaching (Elementary)
Number concept.
QA135.6 / .R53 2012
How children learn number concepts : a guide to the critical learning phases / Kathy Richardson - Bellingham, Washington : Math Perspectives, ©2012. - xvi, 204 p. : ill. ; 23 cm.
include Bibliography
9780972423809
Mathematics --Study and teaching (Elementary)
Number concept.
QA135.6 / .R53 2012