美国经典幼儿数学游戏 / 3-4岁.
Mei guo jing dian you er shu xue you xi / 3-4 sui.
Ben shu zhu yao mian xiang 3-4 sui xue ling qian er tong, Zhu yao nei rong shi bang zhu you er ren shi 10 yi nei de shu zi, Ren shi jian dan de shi jian, Qian bi de zuo yong;Ren shi xian tiao, Zheng fang xing, Zhang fang xing deng ji ben tu xing, Chu bu jian li shu xue zhi jue si wei.
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