中国台灣香港新加坡華人媽媽與四歲男孩在何數棋学棋

Ho mathematics and chess is the only child education franchise dedicated to teaching mathematics through its world's first math and chess integrated workbook and his invention of the Ho math and chess teaching set. More info and franchise info go to www.mathandchess.com.



http://www.youtube.com/watch?v=qvZ1H3oRMzc&hl=en

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