BONZ INSIDE-OUT!

Made up of parts that look like the Curious Bonz toys designed by Glaser and Higashi (the team behind Zolo ABZ: An Alphabet Book), spindly characters called Bonz jump and jive through this jazzy-looking compilation of skeleton-themed activities. They dance to "Dem Bonz" ("The knee bonz connected to the leg bonz"), sing "This Old Mandible" ("He played one,/ He played knick-knack on my thumb..."), tell passable jokes ("What instrument do skeletons play?/ Trom-bone") and present a true/false "Fact or Fibula?" quiz. Sleek software illustrations in eye-candy colors, à la Richard McGuire, create a chic veneer. Ages 4-10. (Oct.)