Montessori Sandpaper letters are a way for kid to start tracing even before they actually start writing . This is really an exercise in observing design, and children enjoy tracing touch screen and getting feel of of basic Montessori sandpaper letters. This handy app can be used in conjunction with actual Montessori Sandpaper to trace the letters and hear their sounds. 蒙臺梭利砂紙字母的孩子開始追蹤，甚至在他們真正開始寫作的一種方式。這是一個真正的鍛煉觀察設(shè)計，和兒童享有跟蹤觸摸屏和蒙臺梭利的基本砂紙字母的感覺。這個方便的應(yīng)用程序可用于，結(jié)合實(shí)際蒙臺梭利砂紙跟蹤的字母和聽到他們的聲音。