TY - BOOK ED - National Council of Teachers of Mathematics TI - Principles and standards for school mathematics SN - 0873534808 U1 - 510.71 21 PY - 2000/// CY - Reston, VA PB - National Council of Teachers of Mathematics KW - Mathematics KW - Study and teaching KW - United States KW - Standards N1 - Includes bibliographical references (p. 383-390) ER -