It's a poster, it's a placemat, it's both. Smart Poly® material has been designed for the classroom and home. The material is strong, durable, water resistant, and does not need lamination. Heavy duty surface for fun and colorful learnings. Write-on/wipe-off surface for use with dry erase or water based markers and washable crayons. Measures 12" x 17.25" . Use this PosterMat Pal to visualize basic fractions to help create a way of learning and understanding how many of each represent a twelfth of a number up to a whole. Use as a guideline for fraction equations. Color coded for easy representation of each fraction.