In the dictionary, how has meanings of the manner or way in which and to what extent, degree.
By the end of the lesson, only Hermione Granger had made any difference to her match; Professor McGonagall showed the class how it had gone all silver and pointy and gave Hermione a rare smile.
Did Professor McGonagall repeat what Hermione did (demonstrate how she did it), or did she just pick up the match that Hermione had changed, to show how much it had been changed?
AND
Can you show me how I may tell which of these meanings is in play?