Teacher Young's Classroom 楊老師教室
Number, Bead, Abacus, Mental Math, Mental Mathematics, Mental Arithmetic, Cupertino Abacus, Sunnyvale Abacus, San Jose Abacus, Saratoga Abacus, Palo Alto Abacus, Santa Clara Abacus, Mandarin, Chinese language, Chinese Culture, Chinese School, Abacus Competition, World Abacus, Abacus Award,
