1. An aid for teaching word pronunciation comprising: a set of alphabetical letters in material form, said letters being arrangeable to form words; at least one of said letters having a structural distinction from other letters in said set, in addition to conventional differences of alphabetic configuration; said structural distinction selected from a group of at least three structural distinctions, each distinction denoting a particular pronunciation of said letter in the formed word; one of said distinctions being that the letter is transparent, to denote that the letter is silent in the formed word; another of said distinctions being that the letter is of a greater height than the other letters, to denote that the letter is to be pronounced with a long vowel sound; still another of said distinctions being that the letter is in the shape of an object, to denote that the letter is to be pronounced as in the word for the depicted object.
7. A teaching aid in accordance with claim 1 wherein said set of alphabetical letters includes the letter I having a vertical stem from the upper, middle and lower portion of which three branches laterally extend from each side of said stem to denote its pronunciation as being that of the letter I in the word LITER.