When you go to Costco, there can be something called “Math for Grade 2”. It's colourful and has pictures and you fill in the little blanks. It's intended for you to take home to your child to have them fill it in. Similar kinds of materials are created by publishers for educators. They're intended for one-time use. Those kinds of copies are not—
On May 24th, 2018. See this statement in context.