Calculating Devices Review / HowTos

Currently Playing: The Rise and Fall of Chisanbop

Chisanbop is a finger counting and calculating method created by Hang Young Pai and Sung Jin Pai. This is episode 88 of my video series about old calculating methods. #clearyourfingers This project represented far more research than my typical videos. Special thanks for helpful conversations with Randi Wolf, Sohmi Pai, and Ed Lieberthal's long-time friend and business partner. Thanks also to MaryLou Driedger. Heeja Park Pai interview footage is © Korean American Story, used by permission. Translation help from Jacob Hanbin Eun. "Chisanbop" calligraphy by Sang Man Kim: https://www.etsy.com/shop/SamuelsArtGallery End song inspired by "Hotter than a Molotov" by The Coup: https://youtu.be/X8AW7PmsxAY Chris Staecker webarea: https://faculty.fairfield.edu/cstaecker Some sources: Commercial featuring Fred MacMurray: https://www.youtube.com/watch?v=vtARCOoQTT8 Phil Donahue show: https://archive.org/details/chisanbop_phil_donahue Clips from the Today Show with Tom Brokaw: https://archive.org/details/today_202506 Clips from the Tonight Show with Johnny Carson: https://archive.org/details/chisanbop-on-carson Additional hands footage from Fingermath: Calculating for facts and fun: https://archive.org/details/fingermath-videos My full collection of primary sources (audio, video, and full scanned books and marketing materials) at Internet Archive: https://archive.org/search?query=uploader%3A%22chrisstaecker%40gmail.com%22+AND+chisanbop Photos of Heeja Park Pai with Robert Leslie from Korean magazine The Ladies Joong Ang, July 1991. Social media chisanbop videos (in order) Hi my name is Robin https://www.youtube.com/watch?v=aU34aJN7gY0 This is called Chisanbop https://www.youtube.com/watch?v=9Nf2XM-C76I How to add with Chismbop https://www.youtube.com/watch?v=iaRNG4tPLfM Guys have you seen chisanbop? https://www.tiktok.com/@cheggmath/video/7340386406109351210 Técnica CHISANBOP https://www.youtube.com/shorts/mAhQgHbwtMM Hold on let me ajust a little bit CHISANBOP https://www.youtube.com/watch?v=-Wq9L_pZFuU Hey what's up guys https://www.youtube.com/watch?v=YzhuQHnEsIY Mental abacus boy: https://www.youtube.com/shorts/p4pi5v64RDg Mental abacus girl: https://www.youtube.com/shorts/XZtZjp2TX3w Criss cross multiplication video: https://www.youtube.com/shorts/Nn0AnS_akcM 0:00 Introduction 3:24 Read your fingers (basics) 7:09 The Pais come to America 14:55 Addition and subtraction 22:38 Chisanbop on TV 34:45 Multiplication 38:10 Chisanbop Enterprises Inc 47:04 Hang solo 1:00:30 Fingermath 1:10:37 Aftermath