Harry the author

[rt11guru]

No: HPFGUIDX 175450

guru:
 
I would think that if Snape had been teaching his versions  of the
recipes, that Harry would have recognized them when he saw the  
notations in the book.

Melissa :

Not necessarily.  My handwriting at 43 years of age is vastly 
different to what it was when I was in 17 and in high school.  So I
can see  how Harry might not recognize the notations.
 
guru:
Clarification: I was thinking more of content than of form.

Having spent a lot of time reading the book, Harry would have
recognized that Snape taught them the modified versions of formulas,
not the original versions from the book.

I know that this is an advanced class with an advanced text, but as
with most textbooks, there would probably have been overlap with
previously taught material.