We got a cool set of math manipulatives, called See & Solve Manipulative Kit by Lakeshore Learning for Isaac in the mail today. They were recommended by Erica at Confessions of a Homeschooler, and I was able to get them for a great price on Ebay, so I ordered them.
Isaac, of course, had to take them out of the box RIGHT THEN and play with them, and Abbie can't resist anything math related, so she started trying to show him some simple addition.
Abbie: "Isaac, how many fingers am I holding up:
Abbie: "And how many fingers on my other hand?"
Abbie: "If I put my fingers together, how many are there?"
Abbie: "So, one plus one is....?"
Isaac (confidently): "Six!"
I managed not to laugh out loud. He did get better with the next problem. When she asked him, after showing him her fingers and all, how many two plus one equalled, he did say "Three!" So cute.