My First Theory Book by Lina Ng is the first workbook in a series of three, designed to offer a smooth transition to Grade 1 Theory. There are plenty of exercises and games to encourage a wider understanding of music, even at the very early stages of learning.
Included within this first book are exercises in writing treble and bass clefs, note names and counting, time signatures, the piano keyboard, writing notes in treble clef, writing notes in bass clef, rests, accidentals, stem positions, time signatures, completing bars with missing notes, completing bars with missing rests, games and tests.
My Second Theory Book and My Third Theory Book are also available as is a series of five books in the Theory Made Easy series.