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. Benefits: 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 Includes number line segments (plus 2 blanks) and arrows. Each segment measures 10"W x 2.75"H. Ages 5+/Grades K+ Set includes 31 magnets