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TRAINING SEMINARS on mental arithmetic from UAMAP and SAMA GLOBAL

  • 28.11.2021
  • Training

April 20-26, 2020 MOSCOW
David Liao is the founder of the international SAMA GLOBAL association and chairman of the PAMA GLOBAL association of the largest organizations in the field of teaching mental arithmetic.
David has been teaching mental arithmetic for children and adults for more than 30 years, and is the repeated winner of world olympiads in mental arithmetic. Man is a calculator.

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