Chock full of entertaining mathematical ideas, puzzles, tricks, and word problems, this book proves that everyone can be a math whiz. "Students can't help but grow in mathematical skills and positive attitudes."--School Library Journal.

Leroy Brown, aka Encyclopedia Brown, is Idaville neighborhood’s ten-year-old star detective. With an uncanny knack for trivia, he solves mysteries for the neighborhood kids through his own detective agency. But his dad also happens to be the chief of the Idaville police department, and every night around the dinner table, Encyclopedia helps him solve his most baffling crimes. And with ten confounding mysteries in each book, not only does Encyclopedia have a chance to solve them, but the reader is given all the clues as well. Interactive and chock full of interesting bits of information—it’s classic Encyclopedia Brown!