How Children Learn Number Conceptsde Kathy RichardsonEdiciones (1)How Children Learn Number Concepts (2012)Math Perspectives Teacher Development Center · ISBN 9780984838196Más obras de Kathy RichardsonAssessing math conceptsAssessing Math Concepts / Two-Digit Addition & Subtraction (Concept 9)2003Developing number concepts book 21999
MMathematics standards for pre-kindergarten through grade 2Mathematics standards for pre-kindergarten through grade 22000