The Ai Chiang-nan fu by the sixth-century poet Yu Hsin is one of the most famous and difficult of all Chinese medieval poems. It relates in a highly allegorical and elliptical manner the fall of the Liang dynasty, which the poet served. The poem belongs to the genre of the fu; rhapsodical, elegiac works written in an irregular metre. It is, however not at all typical of the gen...(展开全部)

“One of the best critiques of current mathematics education I have ever seen.”—Keith Devlin, math columnist on NPR’s Morning Edition A brilliant research mathematician who has devoted his career to teaching kids reveals math to be creative and beautiful and rejects standard anxiety-producing teaching methods. Witty and accessible, Paul Lockhart’s controversial approach will ...(展开全部)

“One of the best critiques of current mathematics education I have ever seen.”—Keith Devlin, math columnist on NPR’s Morning Edition A brilliant research mathematician who has devoted his career to teaching kids reveals math to be creative and beautiful and rejects standard anxiety-producing teaching methods. Witty and accessible, Paul Lockhart’s controversial approach will ...(展开全部)