Ciphers, Codes and Puzzles Galore in this Math Kids AdventureSecret writing in the margin of an old book gives The Math Kids have a new puzzle to solve. The clues lead the kids into the mysterious old house that overlooks the town. Is it really haunted like some of the townspeople say? Fast paced mysteryAnd who is the man in the long beard who keeps showing up everywhere they go? Jordan, Stephanie, Justin, and Catherine find their problem-solving skills might help them solve a decades-old mystery.This Middle Grade Book Introduces readers to interactive math and logic problems they can apply to real-life situationsDives into social issues and problem solvingIncludes an appendix for hands-on learningHas a complimentary teaching guide available on the publisher's website