When a vowel sounds like its name this is called a long sound. If a word with a certain vowel in it says the name of the vowel then that vowel is making a long sound.

Circle Words With Short Vowel Sounds Aussie Childcare Network
Young children are filled with curiosity and a natural desire to learn. Our phonics worksheets cover a variety of topics including short and long vowels digraphs and blends for a different age.
Long And Short Vowels Worksheets Trungcollection Com