Respuesta :
The sentence is stating what the person did first in the list of all the things he/she did in the rest of the paragraph.
See in the sentence how it says, “First, I went to the wrong classroom for math."
See in the sentence how it says, “First, I went to the wrong classroom for math."
This is showing that this is the First problem that was gonna happen out of a list with the Transition word being First. After this, it would be an example like.
Next Jack spilled orange juice on me at lunch.
Next Jack spilled orange juice on me at lunch.