Theory Drills for Young Children is a series of children’s theory workbooks, each with exercises organized to focus on single concepts. Used alongside Poco’s Music Theory for Young Children or any elementary course, the workbooks provide fun interactive activities that offer a lot of proactice to reinforce concepts. Poco Theory Drills for young children Letter Names teaches the notes of treble clef and bass clef. Includes colorful stickers to add to motivation. The explanations are clear and it is a very attractive colorful book.