These handy flash cards are ideal for teaching and testing children on their phonemic letter sounds. The cards are double-sided. On the one side of the card, the pictured letter appears. On the other side of the card is the plain letter without the visual cue. Use the pictured side until the child is confident with their letter sounds. You can then test how well they know their letters without the visual cue. The cards are A6 sized, durable and wipeable. There are 26 cards in the set.