The eye-catching Math Symbols straight borders are the perfect trim for math displays, bulletin board sets, whiteboards, and more. This pack includes 12 borders, each measuring 3' x 3" for a total length of 36'. Mark Twain Media Publishing Company specializes in providing engaging supplemental books and decorative resources to complement middle and upper-grade classrooms. Designed by leading educators, the product line covers a range of subjects including mathematics, sciences, language arts, social studies, history, government, fine arts, and character.