Practice and persistence are the keys to success in mental competitions, Lee said. She uses her own records as a challenge. Lee is also the reigning champion in the Flash Anzan Marathon for mental arithmetic, which she won at the 2016 Memoriad World Mental Olympics in Las Vegas. The first crown came after she finished 10 multiplication problems of eight digits by eight digits in 183 seconds. In division, she computed 10 problems of 10-digit figures divided by five-digit figures in 53 seconds. In doing so, she became the world champion and also set records for solving multiplication and division problems. Lee is a world champion and world record holder in a variety of mental math categories. She defeated 40 other invitation-only competitors at the 2018 Mental Calculation World Cup in Wolfsburg, Germany. Each approach requires different training strategies. In competitions, some use the abacus, while others make mental calculations. The exercises help both the right brain and the left brain develop creativity and mathematics, Lee said. With practice, students will replace the physical abacus with imaginary beads in their minds that they can "manipulate" by moving fingers in the air.
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"Once you know how to move the pieces, you can visualize," she explained. To imagine the abacus in one's mind, students must be fully alert, Lee said, honing their ability to focus. In the early stages of learning the abacus, the goal is to instill what Lee calls number sense and number confidence. Practicing with precision and speed are the next steps.
Her mental math program teaches concentration and confidence, she said, with courses ranging from basic mathematics to high levels of mental computation. After a decade of teaching mental math and abacus in her native country, Lee, who is divorced and has an adult son, moved in 2015 to Fort Lee, where she and Kim founded Abakidz by Tactile Brain.Ībakidz operates three learning centers, in Closter, Fort Lee and Bayside, Queens. Lee instructs students in the use of the soroban abacus, which has five beads per rod. Kevin Kim suggested that Lee move to the United States to instruct students here. Her dream became a reality when a New Jersey entrepreneur discovered her computational prowess online. 'Have a purpose': NJ businesswoman taps family fortune to promote Chinese American causes A winning tradition "My dream is to spread around the world," Lee said.Įthnic food explosion: America's expanding palate is now a $44B industry. But she wanted to do more, she said, and hoped she could teach more people to learn how to use the abacus effectively. She remained devoted to the abacus and taught students how to master the board. Lee was gifted in mathematics, but she decided to major in languages at Hankuk University of Foreign Studies in South Korea. Her parents weren’t particularly interested in math, she said. Soft-spoken, with a slight frame, Lee said she grew up in a “normal Korean household" with three siblings.
"I think everyone who grew up in Seoul used an abacus," she said. At that time, abacus usage was taught almost everywhere in Korea as a part of math textbooks, Lee recalled in an interview. Lee, 59, learned the art of the abacus in a fourth-grade after-school program in her hometown of Seoul, and found that she excelled at memorization. As she advanced, working with the abacus and doing mental math grew on her, and she kept learning.
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