Cuisenaire rod
plural of aition
Any of a set of coloured rods of different sizes used to teach elementary-school mathematics.
plural of covert stutter
plural of bird walk
先生は、数がどのように合わさるかを示すために、小学校の算数を教えるための色付きの棒の一つを、長さの短い二本の棒の隣に重ねて足し算を説明した。
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DiQt
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