P: This poem is about when her daughter was eight, she tried to learn how to ride a bike. When the daughter first ridden a bike, she kept falling and the author always help her to get up. When the daughter starts to get good at biking, the daughter starts to bike farther and farther from the author. By looking at the daughter’s back the author thinks they are saying goodbye.
C: The author used reputation, simile and personification. In line 18, the author used pumping twice to show her daughter is growing up fast. In line 21-24, he author described the daughter’s hair as a handkerchief waving goodbye because the author wants