Text and CD set, all 6 volumes. For those interested in Shichida right-brain development. It seems children can memorize things just by listening to the CDs. The content includes things that everyone, from children to adults, would want to learn as part of their general knowledge. There are no scribbles, noticeable stains, or damage, but please understand that these are used items. The CDs did not have any sound distortion when used, and there were no noticeable scratches, but please be aware that there is a possibility of some sound distortion issues.