3 - 9 years. These sturdy number cards have a smooth beaded texture to enhance tactile sensation. Green dots indicate where to begin tracing each number and red dots indicate where to stop. Directional arrows teach correct number formation. In addition, multisensory activities help improve rote counting, and understanding one-to-one correspondence. Great for early childhood, special education, and ELL classrooms. Cards measure 4 1/4" x 5 1/2".