This is the sixth of a series of comics that embed mathematics appropriate for grades 4 through 6 in story told in comic book format. Printed versions of this comic are being used by students at Cumberland Trace Elementary in Bowling Green, KY. The comic is available as an e-book for the Nook at the link provided above. Hard copies of the comic are available at www.operationcomics.com. Supplementary materials are available for free below. For more information on the origin and goals of this comic, see the pre-print of the paper "Comic Books That Teach Mathematics" at http://works.bepress.com/bruce_kessler/8.
In this sixth issue, Captain Confusion, Wonderguy's arch-nemesis from Operation Comics #1, has escaped from jail and devised a plan to exact revenge on Wonderguy, using information from his sister, who is working as Wonderguy's secretary.
In this issue, the mathematical concepts of the arithmetic mean, multiplying positive and negative numbers, and additive inverses are discussed. Also, the science topics of genetics and dominant/recessive genes are discussed.