Additional notebook for Math class. Great tool when working with equations, since students can locate numbers with ease. Allows greater speed and effectiveness when answering problems and develops motor functions. Available in 5mm, 7mm and 9mm. From faster problem solving to improved motor skills, our GRID NOTEBOOKS are an essential tool for students working with equations. Available in three sizes and designed with left-handed users in mind, these notebooks make answering problems easier and more efficient than ever.