Kenney, Daniel

Mystery, Adventure, Humor... and Math!Sixth-graders Stanley, Charlotte, Gertie and Felix did more than just start a detective agency. Using their math skills and their gut instincts, they actually solved a crime the police couldn't crack. Now the Math Inspectors are called in to uncover the identity of a serial criminal named Mr. Jekyll, whose bizarre pranks cross the line into vandalism. But the deeper the friends delve into the crimes, the more they realize why they were asked to help. And it wasn't because of their detective skills. Join Stanley and his friends in another thrilling adventure of the Math Inspectors series, perfect for math lovers, math haters, and all kids ages 9-12.

School is back in session, and for the seventh graders of Ravensburg Middle School, that can mean only one thing. Field Trip! For as long as anyone can remember, the seventh graders of Ravensburg have been traveling to the old mining town of Forgotten, West Virginia for a few days of outdoor education. But it appears this old town is hiding more than a few secrets. An as usual, it will be up to The Math Inspectors to try and uncover them. Will Stanley, Charlotte, Gertie, Felix, and Herman solve another baffling mystery? OR this time has their luck finally run out and will Forgotten's secrets be lost forever to history?.

Summer vacation has finally arrived, and the Math Inspectors deserve a break. After all, their sixth-grade year was a busy one. On top of all the normal school stuff, Stanley, Charlotte, Gertie, Felix, and Herman made quite a name for themselves as amateur detectives. But when a relaxing day of roller coasters, riddle booths, and waffle eating contests turns into a desperate scramble to save a beloved landmark, the friends quickly discover that this case may be asking more than they are willing to give. In fact, there may only be one way out--to quit. Will this be the end of the Math Inspectors?.

It's Christmas Eve in Ravensburg, and the town is bursting with anticipation for its oldest Christmas tradition. The annual opening of Douglas and Son's Toy Store, home of the greatest toys in the world, is finally here. But this is no ordinary Christmas Eve, and the surprise that awaits them is beyond any of their wildest imaginations: a surprise that threatens to ruin Christmas! Stanley, Charlotte, Gertie and Felix call in a little backup, but will the team's detective skills and math smarts be enough to unravel the mystery?Find out in this funny, heart-warming third adventure in The Math Inspectors series, perfect for math lovers, math haters, and all kids ages 9-12.

It's Christmas Eve in Ravensburg, and the town is bursting with anticipation for its oldest Christmas tradition. The annual opening of Douglas and Son's Toy Store, home of the greatest toys in the world, is finally here. But this is no ordinary Christmas Eve, and the surprise that awaits them is beyond any of their wildest imaginations: a surprise that threatens to ruin Christmas! Stanley, Charlotte, Gertie and Felix call in a little backup, but will the team's detective skills and math smarts be enough to unravel the mystery?.