It is not necessary to assign an entire lesson each week. Lessons and related material build on the previous lessons. Students can work through lessons in order, or teachers may assign pages focusing on specific concepts. Reviews can be skipped and done later in the year to assist the teacher and student in getting through the new material. Theory Time teaches half steps, whole steps, intervals and scales on a keyboard, then on a staff.
Students can subsequently play each example.
Rhythm drills may be used for rhythmic sight-reading. All ear training drills are grouped together in the back of the book, with a comprehensive review test. Each Theory Time workbook averages 60 pages, so they can last throughout a school year. The three Teacher's Editions include answers and Ear Training Guides. Karen Wallace earned a Bachelor of Music from Southwestern University and a Master of Education in Music from the University of Houston.