Georgie is at that awesome stage where he can count and even read words. I almost cried a couple of weeks ago when he read a short sentence to me. One of the top moments of my life. Hands down.
One thing I do often, especially when I need to keep him distracted for a while, is write down simple additions and subtractions for him to do. So far he really enjoys this little activity and I love watching and listening to him count with his fingers.