LWUKM05CD These Math Wrap-up Center Kits come with 5 sets of the same title of Wrap-ups and their corresponding Wrap-up Rap audio CD. (There is no CD for the Fractions.) They are perfect for small groups and math centers. If you don't have the budget for class kits, these center kits are just the thing you need to help sharpen these essential skills for your students. Pick the kits that fit the needs of your classroom. A $60 value, save $10 compared to buying the components individually.