00694nam a2200217Ia 4500 204819 BIBL 20160527193711.0 900918s1990 vau b 00010 eng 90049407 0871201755 11.95 UCGG QA11 .W563 1990 510/.71 20 Willoughby, Stephen S. Local 189480 Mathematics education for a changing world Stephen S. Willoughby. Alexandria, Va. Association for Supervision and Curriculum Development c1990. v, 103 p. Includes bibliographical references. Mathematics Study and teaching. Local 132758 153064 153064 0 0 0 510_710000000000000_W739M 0 evl 215705 10 10 1 2016-05-27 297336 0 510.71 W739m 80000001879553 2016-05-27 00:00:00 r:204819 z:NCC:D 6