Ella Mentary School is having a science fair! Guest scientist Dr. Snow has arrived to help A.J. and his friends conduct their own cool experiments. But what is "the snowman" really planning? And what does STEM even stand for anyway?

When Jeremy is entrusted with Professor Twitchett's creation, a jackalope, he must find a way to keep it safe from the government agents who want it for their own purposes.

Aspiring to win the science fair with a project that proves that cupcakes are good for you, Alexis finds her ambitions challenged by her crush's association with another girl and a cupcake order for a mean girl's sweet sixteen.

Libby and her friends volunteer to run the science booth at their school fair and have some great ideas, but Libby does not always follow directions precisely. Includes a worksheet for each experiment mentioned.

Seventh grader Wendy Toledo knows that black holes and immigration police have one thing in common: they can both make things disappear without a trace. When her family moves to a new all-American neighborhood, Wendy knows the plan: keep her head down, build a telescope that will win the science fair, and stay on her family's safe orbit. But that's easier said than done when there's a woman hiding out from ICE agents in the church across the alley,...

At a science fair competition, Zucchini is angered by Mr. Farnsworth's referring to him as lunch, and plots revenge. Includes a section explaining the scientific terms used in the book.

Lester's first days as a fifth grader at Quarry Elementary School are not even a little bit like he thought they would be -- the cafeteria is too loud for Lester's ears, there are too many kids, and then there's the bully. Lester was always home-schooled, and now he's shocked to be stuck in a school where everything just seems wrong. That's until he hears about the science fair, which goes really well for Lester! But then things go a bit sideways,...

Time travel runs amok as Pigsticks and his loyal sidekick commandeer a faulty time machine, catching comical glimpses of history along the way.

When she has to come up with a unique project for the science fair at school, Imani turns to her magic hair for inspiration.