Great for teaching and practicing fundamentals at the early learner stage. Classic green chalk board is framed with a bold white line and contains 10.5" x 5" of illustration space on top of writing space with one set of white headline, broken midline and baseline format. Line set measures 2". Boards feature a high-quality chalk surface with rounded corners and smooth edges for safety and comfort. Hardboard backing is warp and chip resistant. For best results prime the chalkboard surface by rubbing the entire surface with the side of a chalk stick, then erase completely. Measures 12" x 9" x 0.125".