Reading Metrics
Grade Level
Upper Grades (UG 9-12)
Book Level
9.1
Points
25.0
Fiction/Nonfiction
Nonfiction
Word Count
128638
Points per Word
0.000194
Page Count
420
Points per Page
0.059524
Description
The author tells of his thirty-year friendship with Washoe, a chimpanzee he began working with in 1967 as part of a program to teach American Sign Language to primates. The coauthor is Stephen Tukel Mills.