Our Magnetic Demonstration Number Line is big, bright, and easy to see from anywhere in the classroom! Plus, with numbers from -10 to 120, our number line is aligned with current Common Core State Standards requiring students to master counting to 120. Each number line includes 31 pieces: number line segments, 2 blank segments, and arrows. Sold as a pack of 2 complete number line sets. Features: • Yellow design "pops" visually on your whiteboard • Extends from -10 to 120 to reinforce numbers, counting, cardinality, and operations • Color-coded numerals reinforce odd and even (red odds, blue evens, and black zero) • Dry-erase surface makes for easy clean-up • Each segment measures 10"W x 2.75"H. • Ages 5+/Grades K+