{"product_id":"the-calculus-of-friendship-what-a-teacher-and-a-student-learned-about-life-while-corresponding-about-math-9780691150383","title":"The Calculus of Friendship: What a Teacher and a Student Learned about Life While Corresponding about Math","description":"\u003cp\u003e\u003ci\u003eThe Calculus of Friendship\u003c\/i\u003e is the story of an extraordinary connection between a teacher and a student, as chronicled through more than thirty years of letters between them. What makes their relationship unique is that it is based almost entirely on a shared love of calculus. For them, calculus is more than a branch of mathematics; it is a game they love playing together, a constant when all else is in flux. The teacher goes from the prime of his career to retirement, competes in whitewater kayaking at the international level, and loses a son. The student matures from high school math whiz to Ivy League professor, suffers the sudden death of a parent, and blunders into a marriage destined to fail. Yet through it all they take refuge in the haven of calculus--until a day comes when calculus is no longer enough.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003e Like calculus itself, \u003ci\u003eThe Calculus of Friendship\u003c\/i\u003e is an exploration of change. It's about the transformation that takes place in a student's heart, as he and his teacher reverse roles, as they age, as they are buffeted by life itself. Written by a renowned teacher and communicator of mathematics, \u003ci\u003eThe Calculus of Friendship\u003c\/i\u003e is warm, intimate, and deeply moving. The most inspiring ideas of calculus, differential equations, and chaos theory are explained through metaphors, images, and anecdotes in a way that all readers will find beautiful, and even poignant. Math enthusiasts, from high school students to professionals, will delight in the offbeat problems and lucid explanations in the letters.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003e For anyone whose life has been changed by a mentor, \u003ci\u003eThe Calculus of Friendship\u003c\/i\u003e will be an unforgettable journey.\u003c\/p\u003e-- \"Nature\"\u003cbr\u003e\u003cbr\u003e\u003cb\u003eBinding Type:\u003c\/b\u003e Paperback\u003cbr\u003e\u003cb\u003ePublisher:\u003c\/b\u003e Princeton University Press\u003cbr\u003e\u003cb\u003ePublished:\u003c\/b\u003e 03\/27\/2011\u003cbr\u003e\u003cb\u003eISBN:\u003c\/b\u003e 9780691150383\u003cbr\u003e\u003cb\u003ePages:\u003c\/b\u003e 166\u003cbr\u003e\u003cb\u003eWeight:\u003c\/b\u003e 0.53lbs\u003cbr\u003e\u003cb\u003eSize:\u003c\/b\u003e 8.43h x 5.53w x 0.53d","brand":"Steven Strogatz","offers":[{"title":"Default Title","offer_id":36640119816348,"sku":"9780691150383","price":19.51,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0473\/0804\/6492\/products\/img_3669d6ca-624c-4e47-a138-cfc45e9c49b7.jpg?v=1603851432","url":"https:\/\/pastforward.org\/products\/the-calculus-of-friendship-what-a-teacher-and-a-student-learned-about-life-while-corresponding-about-math-9780691150383","provider":"Past Forward","version":"1.0","type":"link"}