Growing up overnight

Yesterday on the way home from dinner Samantha was talking about my car, because it was beeping incessantly to tell me I have a brake light out. (I don't, but that's another story.) She asked how old the car was and I told her that it was now seven years old. Without stopping to think, and without missing a beat, she said "Wow, that means it's two years older than me."

When did she learn to do simple arithmetic in her head?

Right now she's in the living room reading a book to Joshua. And I mean reading the book to Joshua.

Today after lunch we're going to the Y so she can use the rock climbing wall. That's another thing we haven't been able to do all year.

And Joshua just raced across the room on all fours and is currently trying to climb up my leg, so I'll have to stop there for now.