For Grades prek-1nBeginning readers and special needs students will benefit from the tactile experience of these lettersnThese 4 5/16x 2 3/4Cards are covered with Fine yellow sand and help students make the connection between the Physical movement of forming letters and the actual letter shapesnBeginning readers and special needs students will benefit from the tactile experience of these letters. These 4 5/16" x 2 3/4" cards are covered with fine yellow sand and help students make the connection between the physical movement of forming letters and the actual letter shapes. The set contains 26 standard upper case letters.