![Matt Parker on Twitter: "The USA edition of Humble Pi is out in paperback. And don't tell the UK edition paperback, but the USA version has a new afterword full of bonus Matt Parker on Twitter: "The USA edition of Humble Pi is out in paperback. And don't tell the UK edition paperback, but the USA version has a new afterword full of bonus](https://pbs.twimg.com/media/Esqdt4bXAAA2ah8.jpg:large)
Matt Parker on Twitter: "The USA edition of Humble Pi is out in paperback. And don't tell the UK edition paperback, but the USA version has a new afterword full of bonus
![Amazon.com: Humble Pi: The Role Mathematics Should Play in American Education: 9780879758776: Smith, Michael K.: Books Amazon.com: Humble Pi: The Role Mathematics Should Play in American Education: 9780879758776: Smith, Michael K.: Books](https://m.media-amazon.com/images/I/51MSPF6FRML._AC_UF1000,1000_QL80_.jpg)
Amazon.com: Humble Pi: The Role Mathematics Should Play in American Education: 9780879758776: Smith, Michael K.: Books
![Matt Parker on Twitter: "Thank you to everyone who has pre-ordered Humble Pi! https://t.co/WjYlpfztK1 https://t.co/muPZuqUOO5" / Twitter Matt Parker on Twitter: "Thank you to everyone who has pre-ordered Humble Pi! https://t.co/WjYlpfztK1 https://t.co/muPZuqUOO5" / Twitter](https://pbs.twimg.com/media/Dnn7-ycXsAE9TOJ.jpg)