Because she has a terrible singing voice, fourth - grader Sassy must use a different talent to be part of her school's musical performance on the importance of saving our planet. Includes "Fifteen ways that you can help save our earth." Interest Level: 3-6 ATOS Book Level: 3.7 AR Interest Level: LG AR Points: 3 AR Quiz: 137098EN Reading Counts Level: 3.4 Reading Counts Points: 7 Lexile Measure: 610.