Reading Metrics
Grade Level
Middle Grades (MG 4-8)
Book Level
5.8
Points
1.0
Fiction/Nonfiction
Nonfiction
Word Count
4238
Points per Word
0.000236
Page Count
48
Points per Page
0.020833
Series
Household History
Description
This book discusses the history and development of eyeglasses; includes a brief explanation of how the eye works and the vision problems that glasses can correct.