submitted by 1966_Rosalie 1737 days ago (via youtube.com)
In the past, probably the most frequently used training tools is the original flash card. Instructing the alphabet can be carried out by applying cards along with the letters intelligibly written upon it. And yet, many variations of this “flash card” have been introduced through the years, and even though some of them proved helpful, some would not do much. The idea linked to the Hand Sign Alphabet A-Z, having said that, took the original flash card approach even further.