A phonogram is a combination of phoneme and grapheme. In Greek, "phone" means sound; "gram" means a written letter. Each grapheme stands for one phoneme in a given word.
The representative words below show the phonemes taught for each grapheme. The Riggs method teaches these 118 combinations in the first four weeks of school. Young children learn these combinations quite easily, together with letter formation, margins, and spacing through a multi-modal and Socratic, direct instruction and dictation process. These grapheme --> phoneme correspondences form the first building blocks for the Riggs Institute's integrated language arts method. (Riggs students also study syllables, morphemes, and Greek and Latin roots.)
The phonograms on this chart are presented in the order in which they are taught by Riggs teachers. The first 26 are taught along with basic penmanship skills.
Riggs students practice these phonograms until they are mastered, using sight, sound, voice, and writing so that the neurons in their brains form neural networks between these modalities.
After the first 55 phonograms are taught (usually at the rate of four per day), spelling and decoding lessons begin.