Pattern matching

Emmett has started learning how to name two-digit numbers. This started with looking at speed limit signs while out on the road. He clearly has grasped the pattern, correctly naming 83 before I introduced the word "eighty." Then, of course, there are the problem numbers: one-dy one, one-dy two, etc. And he's said "five-dy" too. In fact, with the 5x numbers, he followed exactly the predictions of the language acquisition books -- first getting the irregulars right (pure mimicry), then getting them wrong (applying the pattern), and then getting them right again (learning the irregulars one by one).