There are two WileyPLUS platforms for this title, so please note that you should purchase this version if your instructor provided course code starts with an "A". The Heart of An Invitation to Effective Thinking engages students in an eye- and mind-opening experience that will captivate even the most math-phobic students. Now in its 4th Edition , the book succeeds in reaching non-math, non-science majors, encouraging them to discover the mathematics underlying the world around them. Written in an enthusiastic and humorous way throughout, The Heart of Mathematics delivers an inspiring and important message that deserves to be read by everyone who hopes to improve their mathematical skills.