The primary school livings multi-function mathematics phrase Dian(64 open colourful diagram, big form of written, pure wood syrup paper printing, protection student's sight) (Chinese edidion) Pinyin: xiao xue sheng duo gong neng shu xue ci dian ( 64 kai cai tu, da zi ti ¡¢ chun mu jiang zhi yin shua , bao hu xue sheng shi li )