Reading Metrics
Grade Level
Middle Grades (MG 4-8)
Book Level
7.3
Points
2.0
Fiction/Nonfiction
Nonfiction
Word Count
9616
Points per Word
0.000208
Page Count
48
Points per Page
0.041667
Series
Science Discovery Timelines
Description
Through timelines and fascinating stories, this book traces the history of key discoveries in Earth and space science.