Decoding develops in stages — from reading by memory, to using some of the code, to using all of the code sound by sound, and finally to Stage 4: using chunks and patterns, where a child stops sounding out every letter and starts recognizing familiar groups like "br" or "ing" as units.
The book's age-by-age guide places this work squarely in first grade, around ages 6 to 7, right after simple consonant-vowel-consonant words like cat and hop become reliable. Blends, digraphs, and final-e ("silent e") patterns are the three big pattern types that come next.
Blends are two or three consonants next to each other that keep their own sounds but are said quickly together — "bl" still sounds like /b/ + /l/, just blended smoothly. This is different from a digraph, where two letters make one brand-new sound.
A digraph is two letters that together make one brand-new sound — not a blend of the two letter sounds, but a single sound of its own. "Sh" doesn't sound like /s/ + /h/; it's its own sound entirely.
When a word ends in a silent e, the e itself makes no sound — but it changes the vowel before it from a short sound to a long one. "Cap" becomes "cape." "Kit" becomes "kite." This is often taught as the "magic e" that reaches back and changes the vowel's sound.
Note: e_e is the rarest of the five silent-e patterns and tends to show up in longer, more advanced words — it's usually the last one introduced.
Per the book's age-by-age guide, blends, digraphs, and silent-e are typically first-grade work, around ages 6 to 7 — after CVC decoding (cat, sit, hop) is reasonably reliable. Introduce one pattern type at a time rather than all at once, and keep the sounding-out habit front and center: even with trickier patterns, attempting the letters first, every time, is what builds the automatic recognition described in Stage 4.
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