"Get ready to I Spy in a haunted house with lots of creepy riddles to solve!"--Publisher's description.

Rhyming verses ask readers to find hidden objects in the photographs.

Rhyming verses ask readers to find hidden objects in the photographs.

With more than 2.5 million copies sold of the first five books in the series, I Spy has proven itself a winner. The best and brightest yet, I Spy School Days is filled with glorious, color, two-page photographic spreads which feature brainteasers to solve in a blackboard scene, hundreds of tiny objects to ponder in a classification puzzle, Rube Goldberg contraptions to figure out, and more. Picture puzzles featuring photographs of school scenes.

Aerial views of rural and urban landscapes connect to form routes through which punch-out cars can be moved on trips to the zoo and other locations, with puzzles and games to play along the way.

The reader follows Waldo as he hikes around the world and must try to find him in the illustrations of some of the crowded places he visits.

Picture puzzles, games, and simple activities introduce the mathematical concepts of multiplication, sequence and ordinal numbering, measurement, and direction.

399 Games, Puzzles & Trivia is a lively mix of challenges, riddles, and brainteasers all vetted by a neuroscientist who specializes in aging brains and designed to work the six key areas of cognitive function that are vulnerable in normal aging: long-term memory, working memory, executive functioning, attention to detail, multitasking, and processing speed.

Despite his overwhelming fear of interacting with people, Christopher, a mathematically-gifted, autistic fifteen-year-old boy, decides to investigate the murder of a neighbor's dog and uncovers secret information about his mother. Christopher John Francis Boone knows all the countries of the world and their capitals and every prime number up to 7,057. He relates well to animals but has no understanding of human emotions. He cannot stand to be touched....

A search-and-find book that features a princess in a castle and a robot in a spaceship learning that they are not that different from one another.