Reading Metrics
Grade Level
Lower Grades (LG K-3)
Book Level
4.3
Points
0.5
Fiction/Nonfiction
Nonfiction
Word Count
668
Points per Word
0.000749
Page Count
24
Points per Page
0.020833
Series
Simple Devices
Description
Text and pictures introduce the inclined plane, a simple device consisting of a slanted surface or ramp to make work easier.