These Magnetic Letters are designed to be used with the Reading Success Series, Books 1, 2, and 3. The letters can be used to teach letter identification, alphabetizing, consonant and vowel sounds, and early spelling patterns. Contains 40 uppercase letters (one each of every letter, plus extra letters for spelling: A,A,E,E,I,O,U,D,M,T,N,R,P,S). All vowels are red and all consonants are green. Each letter is 2 1/2'' (6.3cm) tall.