Annie Barrows

Second-graders Ivy and Bean set out to expel the ghost who is living in the girls' bathroom at their school.

When Bean's parents leave her in the care of her older sister Nancy for the afternoon, she enlists her neighbor and best friend Ivy to come over and teach Nancy how to be a really good babysitter.

Two sisters, Stella and Marigold, do all the regular things, like go to school, but they also share adventures (both real and imagined) and secret sister things.

Best friends Ivy and Bean learn that being very good, or very bad, can be a real challenge when they set out to become like a man Ivy heard about who was so pure of heart that birds and animals followed him.

When all the second grade students must enter the science fair, which has global warming as its theme, best friends Ivy and Bean team up to create an unusual project.

When classmate Vanessa insists that all single children are spoiled, Ivy wonders whether she can become "unspoiled" by giving away all her clothes at school (which does not go over well with her teacher or parents)--but ultimately decides that all she needs to accomplish her goal is a little sister.

After watching a movie about a detective on the television, Bean decides to set up shop as a private investigator--and she and Ivy start looking for mysteries to solve.

With twin older brothers and twin younger sisters, Miri, the single middle child, feels out of place. When she accidentally travels back to 1935, however, she discovers her own lost twin, Molly.

In the sixth entry in the New York Times–bestselling series, two best friends learn about ballet, promises, and how to be a squid. Finally! After months of begging their parents for ballet lessons, Ivy and Bean finally get what they want . . . well, not exactly. Much to their surprise, it turns out ballet lessons do not cover karate chops and roundhouse kicks. The girls have no interest in learning how to dance gracefully, but they promised their...

In this seventh entry in the New York Times–bestselling series, two unlikely best friends get creative as they prepare for the Science Fair. It's the Science Fair, and the second grade is all over it! Some kids are making man-eating robots. Some kids are holding their breath for a very, very long time. Some kids are doing interesting things with vacuum cleaners. The theme, obviously, is global warming. But what should Ivy and Bean do? Something...