Reading Metrics
Grade Level
Lower Grades (LG K-3)
Book Level
4.1
Points
0.5
Fiction/Nonfiction
Nonfiction
Word Count
822
Points per Word
0.000608
Description
Viruses are so tiny they can't be seen without a microscope. But, these tiny things can do a lot. Find out what viruses are and whether they can ever be a force for good.