日文－－
子供学習する算術，認識数学の工具。
English－－
Kids may choose different levels to learn mathematics.
via rearranging number and character puzzles, to solve arithmetic questions.
日文－－
子供学習する算術，認識数学の工具。
English－－
Kids may choose different levels to learn mathematics.
via rearranging number and character puzzles, to solve arithmetic questions.