You can read my suggestions on teaching the possession concept here, and also get the binder card.
This book also uses the word uh-oh. I try not to teach this as a sight word. Usually, I just add it to the short-u card that we've already done. Something like this:
Yes. I really do write directly on the card. I don't see a reason to make a new card. So I tell my student that the h is silent, and really this is a funny sort of a word, but does he remember the sound the u makes? And we go from there. I don't spend a lot of time on it because, due to the context, most students don't stumble on it anyhow.