The Little Girl
The little girl is a symbol for the young reader of the book, who is likely a similar age to her and a similar level of understanding. The little girl is still at a basic level of reading but is beginning to be able to grasp simple rhymes and some more complex sentence structures. This is contrasted with her little brother, who is reading very simple words like "it" and "if."
Silly characters
As is typical in Dr. Seuss's works, there is an abundance of silly and whimsical characters. One example in Hop and Pop is Will, who is "uphill still," and Thing, who can sing. These funny creatures make the story more interesting, which engages small children while teaching them how to rhyme and read.
Words
In a sense, words can be seen as a symbol in Hop on Pop. Seuss introduces a very young reader to the wonders of language and rhyme, showing how words can be used to convey humor and intrigue. In a basic sense, words are symbols for the ideas or objects they convey, which can be seen in this story in a very basic sense.
Rhyming
Rhyming is clearly a motif in this story, appearing on most pages! Seuss includes very basic rhymes such as "cup" and "pup," teaching young readers about how rhymes function in sentences.
