ENGAGING TOOL - Fun and effective for teaching and practicing music fundamentals. DESIGNED FOR MUSIC - Four staves with blue lines and ample blank space. DURABLE CONSTRUCTION - Warp-resistant hardboard backing and non-ghosting dry erase surface for smooth writing and erasing. CLASSROOM PACK - Includes 12 boards for group learning. CONVENIENT SIZE - Each board measures 16" x 11" x 0.125".