As the new computer lab teacher tries to bring Ella Mentry School into the twenty-first century with her peculiar inventions, second-grader A.J. struggles to survive without sugary snacks when Principal Klutz bans junk food.

A young aspiring engineer comes to realize that failure is necessary for success.

When Mr. Cheeseman and his three "smart, polite, and relatively odor-free" children journey to the not-so-distant past, they meet something utterly surprising--the alternate versions of themselves.

Matt Cruse, a student at the Airship Academy, and Kate de Vries, a young heiress, team up with a gypsy and a daring captain, to find a long-lost airship, rumored to carry a treasure beyond imagination.

Freddie Ramos has shoes that give him super speed, super bounce, and super hearing. His friend Mr. Vaslov invented the shoes. Now Freddie is helping him work on a drone. Freddie's excited until he learns the drone's job is to assist Mr. Vaslov. Is Freddie being replaced by a flying robot? At home, Freddie's mom has a new boyfriend, David. Freddie doesn't know how to feel about David and worries his mom won't have time for him now. How can Zapato Power...

Inspired by a teacher who believes each of them is a genius, a class of special-needs students invents something that could convince the whole school they are justifiably proud to be "Junkyard Wonders."

George and Harold and their doubles, Yesterday George and Yesterday Harold, have been taking turns going to school, but when the doubles fall prey to their gym teacher, Mr. Meaner, and his method of mind control that turns students into attentive, obedient, perfect children, it is up to original George and Harold to strike back.

Mr. and Mrs. Green, a loving alligator couple, practice magic tricks, bake cookies, and dream up new inventions.

Archie has no fear except a secret one--the ocean and the creatures that lurk in it--so he tries over and over to invent a way to fly to Iceberg Nine, where his fellow penguins are having a fish fry.

When their detective father asks them to play burglar in order to protect a client's valuable invention from thieves, the Hardy boys find themselves involved in a large and dangerous conspiracy.