E counted to 10! Her articulation wasn't perfect, and she left out 4, but nobody expects perfection at 20 months old! Btw, I didn't teach her this. I usually only count to 3 with her!
Then, O(4) walked up to me and said 10 plus 11 equals 21. And all of this occured while I was checking email and facebook! Hmmm, homeschooling might be easier than I anticipated!