000 00512nam a2200181Ia 4500
008 250428s9999 xx 000 0 und d
020 _a0-7619-7050-9
082 _a510.371 W93t 2002
245 0 _aTeaching number : advancing children's skills and strategies
245 0 _cRobert J. Wright ... [et al.].
260 _bPaul Chapman Pub.,
260 _c2002
300 _axiv, 242 p.
526 _a500 Natural Sciences & Math
650 _aArithmetic -- Study and teaching.
942 _2DDC
942 _cB
999 _c20642
_d20642