Question: what are the vowel digraphs?
Answer: Vowel digraphs are two vowels that when placed together generate one sound. This includes double vowels like the long “oo” in “moon” or short “oo” in “foot”. Other vowel digraphs are formed by two different vowels like “ai” in “rain” or “oa” in “boat”. A long vowel sound is usually formed in a vowel digraph.