The oo sound is among one of the most popular ones your kids will meet as they learn more and more words in their everyday learning. Before beginning the exercise, ask your kids if they can give you some common words which have the /oo/ sound. Ask your child to read each word in this worksheet. If they miss a few, help them to pronounce the words properly. Then, ask your little ones to identify and circle the words that have the /oo/ sound as in moon.