About this item:
Huge floor sticker adheres to any clean, smooth surface, teaching simple math operations through hands-on activity. Physical space between numbers gives students a tangible reference to the size of their values. 
 
The Primary Number Line features both positive and negative numbers (-5 to 5) and can be stretched in either direction with a Positive (5 to 15) or Negative (-6 to -15) Expansion line. 
 
Low-tack adhesive will not leave any residue yet stays in place until removed. Designed for single adhesion. Primary Number Line is 12'L; each expansion line is 11'4"L. Recommended for elementary and up.