The Number Line Pocket Chart is great for reinforcing number relationship lessons, as well as teaching skip counting, addition, and subtraction! It supports National Council of Teachers of Mathematics (NCTM) standards, measures approx. 27" x 22", and features: -- *A dowel rod with 4 interchangeable sliding pointers *2 vinyl pockets *A storage pocket with hook-and-loop tape closure *15 write-on/wipe-away number line cards *3 equation cards *Flame retardant material and durable construction *Sturdy grommets for easy hanging *A teacher resource guide --(Patent Pending)