After signing up J for preschool, I had a revelation that I had not spent nearly as much time on letters and numbers with him as I did with his sister.  (Poor second child.)  After working with him for a few minutes, it was determined that he really only knew the number 1 and the letter O.  So apparently he’s all set to write in binary.


(After some diligent work he can now recognize the letters in his name.  There is an O in it, after all.)