Up for auction is a lot of two CDs by Jack Hartmann, a renowned children's music artist. The first CD is Math All Around Me, which teaches kids about math through fun and catchy songs. The second CD is Rhyming to Beat, which helps kids develop their language and literacy skills through music. Both CDs come in standard jewel cases and are in great condition. Don't miss out on this opportunity to add educational and entertaining music to your child's collection!