Owen has a toy he got from his grandmother. It’s one of those boxes with shaped holes and shaped pegs.
Five days ago, Owen could not really get shapes to fit into shape-shaped holes (other than the blue circles, which he could sometimes fit by accident). Well, now he can. It was staggering to see him learn. Literally from one day to the next he went from completely unable to grasp the concept of square peg in square hole, star peg in star hole (and throwing the pegs on the floor if they didn’t fit) to totally getting it.
And what’s fun to watch is how proud of himself he is, echoing our parental squeals of delight every time he correctly places a peg in the hole. “Aaah!” he will say, high-pitched, excited, before moving on to the next piece.