Morgan and the Forty Thieves by Addie Abacus is the first book in the Magic Math Adventures. With Morgan’s father lost on an expedition to the Galapagos, she and her mother have been forced to change their lives and they must take a job working...

Morgan and the Monster of the Deep by Addie Abacus is the second book in the Magic Math Adventure series. Morgan and Rusty set out on a ship to find the traitor that betrayed them to the thieves. This takes them on an unforgettable adventure...