Blank Student Number Lines allow teachers to differentiate math instruction for students' individual needs. These open-ended number lines also provide teachers with a customizable, hands-on tool for every math lesson. They also feature a write-on/wipe-away surface to make it easy for students to use over and over again! Student number lines are the perfect hands-on tool for reinforcing mathematical concepts such as counting, identifying number patterns, partitioning numbers, comparing numbers, and building number sense. Each pack includes 30 number lines that measure 22 x 1.5 each. Sold as 3 packs for a total of 90 number lines.