Fun in school

My 7 year old was working on math today and decided to teach her brother (remember he's 3).  I gave her some simple multiplication problems and let her go.  She taught her brother for about 15 minutes and answered her math problems.  Later when I was working with my son on the work he was doing I asked him if he could find the number 6.  He said, "There is the 6.  Mom, if you have two groups of 6 that's twelve, but one group of 6 is always 6 and it gets lonely." 
Multiplication might be easy for him, but explaining that the numbers don't have feelings might break his heart.