Reading Metrics
Grade Level
Lower Grades (LG K-3)
Book Level
4.2
Points
0.5
Fiction/Nonfiction
Nonfiction
Word Count
1202
Points per Word
0.000416
Page Count
32
Points per Page
0.015625
Description
RobbO and RobbEE learn that a ramp, called an inclined plane, is used for building stairs and escalators and was even used in ancient Egypt to build the pyramids. The coauthor is Gerry Bailey.