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RT @temmusu_n: .@genkuroki The Development of Quantity Concepts: Perceptual and Linguistic Factors by Linda S. Siegel https://t.co/xcNJuoLw…
RT @temmusu_n: .@genkuroki The Development of Quantity Concepts: Perceptual and Linguistic Factors by Linda S. Siegel https://t.co/xcNJuoLw…
.@genkuroki The Development of Quantity Concepts: Perceptual and Linguistic Factors by Linda S. Siegel https://t.co/xcNJuoLwFy はどうでしょう。 #掛算