Great for any classroom setting, this bulletin board set is great for learning math concepts. Employ the flexibility of this interactive teaching tool to delve into mathematical concepts, from even/odd numbers to positive/negative integers, and various math operations. The number lines can be used for whole class lessons or for individual student reference during math lessons. 19 number line pieces, 5 accents, and a teacher's guide. Largest piece is 23" x 5". 24 total pieces.