Paper for homework: 

I require students to show work to their math questions. 

They can use lined paper with a pencil,

graph paper and a  pen,

used envelope and a broken crayon,

receipt with whatever is available,

napkin not covered in barbecue sauce. 

They can write all over their homework paper to solve their work.

My point is, I need to see the work when they hand it in the next day.

"No work, no credit." 

Alexa and Mr. Google are not allowed to help with math.

Everyone is required to show their work.

(I also have paper I can send home, just ask)