"Theory Made Easy For Little Children Level 1" by Lina Ng provides notes (semibreve, minim, crotchet), beats count, dotted minim, the piano, time signature, bars, bass notes, review notes, games, tests, and some worksheets for practicing music notation. It also includes a lesson record book and a certificate for signing by a teacher or parent upon completion of the book. Specially designed for children aged 4 to 7 years, it is the first of two books that introduce music theory using colorful illustrations and stickers for the exercises.