In this mind-bending book, each puzzle is framed as a question that prompts young readers to look for or do something specific and even includes an explanation of how the illusion works, so kids won't be confused for too long.

Examines illusion in art and explores the techniques, styles, use of perspective, and composition that draw people in for repeated looks.

Demonstrations accompanied by explanations illustrate how and why the senses can be fooled.

Computer-generated 3D images of Harry Potter characters emerge when the viewer "decodes" the drawings.