Silent Way teachers use some specialized teaching materials. One of the hallmarks of the method is the use of Cuisenaire rods, which can be used for anything from introducing simple commands to representing abstract objects such as clocks and floor plans. The method also makes use of color association to help teach pronunciation; there is a sound-color chart which is used to teach the language sounds, colored word charts which are used to teach sentences, and colored Fidel charts which are used to teach spelling.