The tactile feel of these wooden plates also makes them useful for special educational needs like partially sighted or blind. Positioning the marking point in the bottom right hand corner of the plate ensures that the letter is not upside down. Includes: 29 pieces Size: length 17 cm, width 15.2 cm, height 15.2 cm, weight 320 g Size of wooden plate 7 x 5 x 0.4 cm Materials: Birch plywood, coloured laquered. Ages 3 and Up.