Word Families: How Kids Read Forty Words by Learning One
A word family is a group of words that share an ending: cat, hat, mat, sat, bat, rat, flat, chat. Change the front, keep the back. It is the cheapest trick in early reading, because a child who has cracked -at has not learned one word — they have learned every word that ends in it.
Why it works. A beginner decoding hat from scratch handles three separate sounds and has to hold all three. A beginner who knows -at handles one sound plus one familiar chunk. That is a third of the memory load, which is exactly why speed jumps as soon as families start.
A teaching order that works. Short a first: -at, -an, -ap, -ag. Then short i: -it, -ig, -in, -ip. Then short o: -op, -ot, -og. Then u: -ug, -un, -ut. Then e: -et, -en, -ed. Finish each vowel before starting the next — mixing vowels early is the commonest reason a child's reading looks unstable.
Letter sounds are the prerequisite, digraphs the next step. Once single consonants are solid, add sh, ch, th, ck: shop, chat, that, back. They are two letters making one sound, and children accept that easily if it is said explicitly.
Then blends at the front. st-, tr-, fl-, cr-, sp-: stop, trip, flag, crab, spin. Same families, harder onsets, no new endings — so the child feels it is still easy.
What to do at home. Write the ending once and change only the first letter, one word under the other, so the pattern is visible on the page. Read the column down, then out of order. Then ask the child to invent a nonsense one — zat, vat — which proves they are decoding rather than remembering.
See also blending words, phonics games, learn to read English and games for 1st graders.
