Vowels and consonants are the letters that make up the alphabet. Before beginning this worksheet, teach your kids that there are 5 vowels, and tell them what they are. Then, teach them that there are 21 consonants in the alphabet. You can give them some common examples of words that begin with some consonants. Ask them to recite the alphabet if they can. Look at this simple printout with your little ones, and help them circle all of the consonants.