What is a 3-ring hard-backed notebook with 3 inch binder

Question

its the first thing on my school list and i think it means a 3 ring 3 inch binder but I'm not sure.

and i also need to know what the difference between a trapper keeper and binder is.

thanks.

Answer 1

yes it is a 3-ring 2-inch binder, but it has to be a hard one, not floppy. Trapper keeper is the ones with zippers and all those little pockets. Your teacher just wants basic binder, no whistles