Optical Illusions

This ebook is a colorful collection of 36 mind-bending optical illusions in eight categories: 

1. ·         Illusions of Size
2. ·         Illusions of Perspective
3. ·         Geometric Illusions
4. ·         Illusions of Contour
5. ·         Illusions of Color
6. ·         Grid & Motion Illusions
7. ·         Illusions of the Possible
8. ·         Ambiguous Images

 There is one illusion per page, and each illusion has a question for the student to answer. The second half of the book provides the correct answers, with illustrations and explanations of how the illusions work. Most of the illustrations throughout the book are in color, and all were created professionally. Students of all ages—as well as adults—will love it!