Start now and tell the truth, when asked why you haven't finished your math assignment.
I have just realised I have not done my Math homework and its due in tommorow can anyone think of a good excuse its to late to do it now I have it first period?
Explain to the teacher that you've been in a state of shock since Trump won the White House and you weren't able to concentrate. I'm sure he'll understand.
Tell your teacher you have poor time management skills and a lack of putting priorities like your education first. Or you can stay up late and do your homework. Putting your education before you beauty sleep.
The only thing I could think of to get myself out of it is to be late not sign in for first period and take a lunch detention maybe ?