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. 蒙台梭利砂纸字母的孩子开始追踪，甚至在他们真正开始写作的一种方式。这是一个真正的锻炼观察设计，和儿童享有跟踪触摸屏和蒙台梭利的基本砂纸字母的感觉。这个方便的应用程序可用于，结合实际蒙台梭利砂纸跟踪的字母和听到他们的声音。