00668pamaa2200217 4500 0000052807 20140714090000.0 140714s2012 eng 9780615653631 (pbk) QA141 DEV 2012 Devlin Introduction to mathematical thinking Keith Devlin. 1st ed. Palo Alto, CA: Keith Devlin, 2012. x, 92p.: ill.; 18 cm. COPS Includes bibliographical references Mathematical ability Number concept Mathematics -- Psychological aspects http://www.profkeithdevlin.com