Reading Metrics
Grade Level
Lower Grades (LG K-3)
Book Level
5.5
Points
0.5
Fiction/Nonfiction
Nonfiction
Word Count
2996
Points per Word
0.000167
Page Count
48
Points per Page
0.010417
Description
This book explains the science behind how sight occurs, discusses the links between light, sight, and the brain, examines the phenomena of optical illusions, and examines ways to protect the eyes.