Versatile mats work with either dry- or wet-erase markers for years of use.- Supports state and NCTM Standards for creating and interpreting mathematical representations- Allows students to draw shapes, plot coordinates, and create bar and line graphs in geometry and algebra lessons, plus display science data- Features graph squares on both sides and labeling lines on reverse side only- Eco-friendly mats measure 17" L x 11" H each and reduce the need for photocopying- Grades K-3