The number devil :：a mathematical adventure / The number devil : a mathematical adventure The number devil：a mathematical adventure The calculus story :: a mathematical adventure / Calculus story a mathematical adventure Eight lessons on jnfinity :: a mathematical adventure / A mathematical adventure / 认识无穷的八堂课：数学世界的冒险之旅：a mathematical adventure Six Dinner Sid :：a highland adventure / Eight lessons on infinity a mathematical adventure