This resource includes worksheet answer keys for the treble and bass clef in a hard copy version and on disc for projecting specific pages from the student book. Marking the student workbooks will be easy using the disc that includes the projectable answer keys, Easy Music Theory book, and assessments in pdf and PowerPoint versions. An assessment package is included in the Teacher’s Guide with 15 quizzes in the treble and bass clef and a hard copy/projectable answer key.