The Montessori way of teaching letters introduces 3 letters at a time through a 3-period lesson. It focuses on letter sounds and symbols and learning the formation of the written letter in a sensory way. Learning the letter formation by tracing with their finger fees is wiring their brain to eventually write the letter. Traditionally the letter sounds and lower case symbols are introduced first. Letter names and upper case letters are introduced later after they are confident in the lower case a