I have no idea if my child is truly gifted but he is bright.
I wanted to ask what some of the parents in here think of something he has been doing.

Although he could count by 20 months, he now refuses to say, '10,11 and 12'. He calls them 'zeroteen, oneteen, and twoteen'. He wants to know why they don't have 'teen' endings like, 13, 14 etc. and reasons that his way is better. Is this type of thinking in a 39 month old typical or advanced?