Toilet paper is a calculation book for students. Straw paper is an exercise book for primary and middle school students to solve mathematics, which is divided into grass paper, middle grass paper and big grass paper. Draft paper is draft paper, which means calculus. The use of toilet paper solves the problems of drawing space and writing space for solving problems. \x0d\ For more information about the significance of playing cursive paper, please go to:/ask/9814fc1615818416.html? Zd view more content