Now here is a novel idea. Write each scale out on a card with its name on the back and use them as a practice aid. Does this sound familiar? Well now Dawn Savell has done the hard work for you and produced them together with a 'how to use' guide and packaged them in a plastic box. Don't you wish you'd thought of it first?!
Difficulty level, roughly compared to ABRSM exam grades. 0 is beginner, 9 is advanced (beyond grade 8).