After Molly is done playing with her brother's collection of cars, she must put them back in their original order, in an introduction to the concept of sequencing. MathStart Level 1 Series Interest Level: K-3 Reading Level: 2.0 ATOS Book Level: 2.1 AR Interest Level: LG AR Points: .5 AR Quiz: 46555EN Reading Counts Level: 1.7 Reading Counts Points: 1 Lexile Measure: 360 Lexile Code: AD (Adult Directed).