[01/14/2018] A Mathematician’s Lament 數學家對數學教育的反思，Kindle版電子書，A Mathematician’s Lament: How School Cheats Us Out of Our Most Fascinating and Imaginative Art Form Kindle Edition
by Paul Lockhart (Author),‎ Keith Devlin (Foreword)，目前特價$1.99 USD。 Prime境內免運費。哪裡買:amazon。