He totally can't say "three" -- he's been trying. It's hilarious. Once when he was working on it I said "once, twice, thrice" about something, and he stopped what he was doing and gave me this "You're not serious" look which was a total copy of one of my not-so-great habits. He's really pretty cute.
That does sound cute!
RE sequencing: I am with you. I have this quote written down from 18 months: "First we eat, then we go to the playground. Yay!" My verbal girl loves to understand time and sequencing. She is a bit obsessed about this. She has close to 20 birthdays memorized, and can recite the order they come in. She had a solid grasp on how the seasons change well before she turned two. This seems to fall more in the verbal domain to me.
DD shows very little mathematical precocity. At 2.5 she can count objects assigning each a number with about 50% accuracy (luck). And, this is only up to 10. She THINKS she is always right. But, we are still waiting for it to click.
DD
could eyeball 1 or 2 of something sometime before 18 months. She could do 3 of something shortly after that. She can now do up to 4 with 100% accuracy. In fact, she will eyeball a group of four, and then attempt to count them using 1:1, might completely skip one, yet still come up with four, because she
knows it is supposed to be four just from eyeballing it.
So, that is my verbal girl.
What I really find interesting is the gender disparity among children and adults advanced at math. I know it is debatable, but that withstanding, is mathematical precocity overlooked in girls? Are boys nurtured more in the area of math? Is it biological? Does it have something to do with males tending to be more visual-spatial than women?