Starting her own all-girls mathlete team, Talia, who loves math puzzles and code-breaking, is determined to lead her team to victory while trying to break the social code of preteen life.

Problems arise for Amelia when she starts sixth grade at the same middle school where her older sister Cleo is an eighth-grader, and she gets the school's meanest teacher for three of her classes.

The hand-lettered contents of a nine-year-old girl's notebook, in which she records her thoughts and feelings about moving, starting school, and dealing with her older sister, as well as keeping her old best friend and making a new one.

Amelia records her thoughts and feelings about running for school secretary.

Ten-year-old Amelia draws pictures and writes about her daily life in the journal she receives for her birthday.

Amerlia thought that the only thing better than a best friend was two best friends. But then they come together and she's not sure if any of them are friends. Will Amelia be able to have more than one best friend?

Hoping to impress the new girl in her class while they work together on an archeological dig project, Amelia tries to improve by giving herself a makeover and almost loses a friend in the process.

To spread gossip, you need to know stuff and, you need to know how to tell it in an exciting way--but you have to be careful, since gossip is never nice, is the summary of the story.

Challenged to write an article about an unexpected results of her science fair project, Amelia incites the wrath of her poorly depicted project partner.

Amelia is starting middle school and her sister is in ninth grade at a different school, so Amelia wonders if she's ready to take the next step toward boys and makeup.