How math works: a guide to grade school arithmetic for parents and teachers /
Williams, G. Arnell
How math works: a guide to grade school arithmetic for parents and teachers / G. Arnell Williams - Maryland: Rowman & Littlefield Publishers, c2013. - xix, 325p.; ill.
Includes bibliographies and index
978-1-4422-1874-1
Arithmetic - Study and teaching (Elementary)
G.S. 372.7 W723 2013
How math works: a guide to grade school arithmetic for parents and teachers / G. Arnell Williams - Maryland: Rowman & Littlefield Publishers, c2013. - xix, 325p.; ill.
Includes bibliographies and index
978-1-4422-1874-1
Arithmetic - Study and teaching (Elementary)
G.S. 372.7 W723 2013