This cool notebook features multiple retro colored pi symbols inside a larger pi symbol. This is a great gift for teachers, professors, students, artists, mathematicians, mathletes, engineers, physicists, scientists, or anyone who loves math. Graph paper is excellent for writing, taking notes, sketching, drawing, mapping, designing, charting, work, school, and hobbies. Click "Math Books by Witty Logic" for more. Product details: 8.5 x 11 in Paperback 60 Sheets/120 Pages Quad Ruled Graph Paper 4x4 Black and White Glossy Cover