知育たしざん勉強法 【flash たしざん】level.0-1 1問8秒 解答2秒 答え１０以下の足し算 知育 脳トレ addition Arithmetic
Synopsis
たしざんを覚え始める幼児に合わせて、答えが１０以下の問題が順番に出てきます。 8秒考えて、2秒解答を見るといった流れで、 ...
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