An open number line is a visual representation for recording and sharing additive strategies! Use these number lines to visually demonstrate basic math concepts in counting, fractions, decimals, and more. One side of the open number line features a blank line with hatch marks, and the other side features a blank line. These student-sized open number lines have a write-and-wipe surface that allows for multiple uses. This set includes 10 Open Number Lines. Each number line measures 18" x 3.5". For over 55 years, hand2mind has encouraged hands-on learning and discovery, driving deeper understanding and helping children unlock their full potential. hand2mind specializes in math manipulatives designed to help students learn by doing. We supply Math Counters, Rekenreks, Abacus, Counting Cubes and more to help little ones go from counting to 10, 20 and beyond! From early math to middle school math, hand2mind has you covered with products designed to enhance learning in the classroom and the world around us. Through hands-on exploration and discovery we strive to find new ways to encourage students in math practice, literacy activities, STEM education and more!​