Reading Metrics
Grade Level
Middle Grades (MG 4-8)
Book Level
8.6
Points
3.0
Fiction/Nonfiction
Nonfiction
Word Count
13931
Points per Word
0.000215
Page Count
64
Points per Page
0.046875
Series
Kingfisher Knowledge
Description
Delve into the depths of the earth to explore the makeup of the world’s fascinating outer layer. Readers will unravel the history of rocks, identify the minerals that make them, and find out about their different uses.