Reading Metrics
Grade Level
Middle Grades (MG 4-8)
Book Level
6.2
Points
9.0
Fiction/Nonfiction
Fiction
Word Count
53687
Points per Word
0.000168
Page Count
323
Points per Page
0.027864
Series
George's Secret Key
Description
George and his best friend, Annie, have been selected as junior astronauts, part of a program that trains young people for a trip to Mars in the future. The coauthor is Stephen Hawking. Book #5