Geyer's addition and subtraction carpets are a fun and educational way to decorate the classroom. The Mathematics Squares are a good for the playroom or classroom. It has numbers one through nine and seven mathematical symbols, for a total of 16 squares. Comfortable enough for students to sit on for reading, group activities, and class circle time. Also, has backing that stops slipping. This makes it great for students to play math activities with. The other carpet is great to make large reading areas or to meet for class circle time.