Book 3 is more challenging than either 2 or 1, since it introduces diphthongs and diagraphs –oy, –er, –ow, aw, oo — as well as consonant combinations like st, sm, pr, and others. Each lesson introduces a phonetic element, then a word-reading exercise to practice applying it, and then a sentence-reading exercise to reinforce the sound pattern and also teach comprehension. In Book 3 the students are introduced to many of those sound/spelling patterns that tend to confuse: those exemplified above and others, including the long-i igh, the ending -tion, and other potential stumbling blocks that often interfere with with students’ progress in quickly deciphering unfamiliar words.
