There is some creasing on the cover, but I think it's in a condition that doesn't interfere with use. If you are concerned, please refrain from purchasing. --- Research lesson examples that value the characteristics of upper-grade children. Examples of using self-evaluation and mutual evaluation to enhance children's self-expression, examples of creatively engaging in music creation, examples of devising their own ensemble expression through group activities, and examples of challenging various vocalizations and enjoying the ingenuity of singing expression, etc.