Reading Metrics
Grade Level
Middle Grades (MG 4-8)
Book Level
7.5
Points
2.0
Fiction/Nonfiction
Nonfiction
Word Count
11320
Points per Word
0.000177
Page Count
88
Points per Page
0.022727
Series
Ancient Technology
Description
This book discusses the invention of six simple machines in various ancient civilizations from the Stone Age to the fall of the Roman Empire. The coauthor is Mary B. Woods.