Katie's class is building model volcanoes, but when most of the ingredients end up on Katie, she blows her top.

Miss Winkle separates the class into teams and instructs them to build towers out of paper cups, and the group who builds the tallest tower wins--but they have very little success until Pedro has an idea about how it can be done.

Samantha Casey loves everything about her job as an elementary school librarian on the sunny, historic island of Galveston, Texas-the goofy kids, the stately Victorian building, the butterfly garden. But when the school suddenly loses its beloved principal, it turns out his replacement will be none other than Duncan Carpenter-a former, unrequited crush of Sam's from many years before. When Duncan shows up as her new boss, though, he's nothing like...

As their makerspace project the students in Yasmin's second grade class are building a city: there are houses, a school, a church, even a castle, but Yasmin is not sure what to build--until inspiration strikes.

Pen pals Molly and Olive are both having relationship problems in their third grade classes--Molly is struggling with Jenna, a new girl, who seems to think that name calling is a way to fit in, and Olive has joined a gymnastics team which is putting a strain on her friendship with Emma, whom she has know for years.

Alexander and his new friend, Rip, are worried that the worms the rain has brought out are really the megaworms that Notebook of Doom describes but they soon discover that the night crawlers are trying to warn them about the monster tunnel fish that are threatening Stermont Elementary.

Emma's research on Erik the Red soon extends beyond the classroom.

Missy wants to take home the class pets, but another girl, Tiffany, has already asked their teacher so Missy and her friend Oscar need to come up with a plan to make Tiffany change her mind.

Alexander has just moved into Stermont, but the elementary school is being torn down, his new classroom is located in the hospital morgue, a notebook he finds is full of information about monsters--and everywhere he turns there are spooky balloon men determined to attack him.

Eva wants to be friends with Hailey, the new owl in her class, but when Hailey seems to prefer Lucy's company, Eva starts to feel left out, and even a little jealous of her best friend.