By learning phonics, your child will have the best possible start in reading, spelling, and language skills. Each card in the kit contains one 'phonogram', which is defined as either one letter or a combination of letters which represents one sound in a word. For example, in the word 'that', the phonograms are 'th', 'a', and 't'. The break-down of a word, such as 'that', is called decoding, and is also practiced with these cards. The cards come with a wall chart and detailed instructions for the teacher.