Frankie Sparks, the self-proclaimed "best inventor in the third grade," does research and creates a tool to try to persuade her classmates that a rat would make the best class pet.

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.

Nelson the awkward ninja tests the limits of his skills and an exciting new jetpack to stop an animal rampage and machine malfunctions that have thrown the town into chaos.

An awkward misfit wakes up on his tenth birthday to discover that he has spontaneously developed ninja powers overnight and become the world's only remaining defender.

A little girl has a wonderful idea. With the help of her canine assistant, she is going to make the most magnificent thing! She knows just how it will look. She knows just how it will work. But making the most magnificent thing turns out to be harder than she thinks.

Three young inventors are excited to start their summer internship at Flax Industries, where they can build the invention of their dreams, but things take a sinister turn when Dr. Flax's robots take over the laboratory and try to take over the world.

With the Board of Inspectors threatening to shut down Rotten School, Bernie Bridges only has time for one last money-making scheme, but his friends are too obsessed with a role-playing video game to help him.

When Kristoff and the ice harvesters challenge Oaken and his new invention to a friendly contest, Oaken, Elsa, and Anna becomes embroil in a mystery involving a missing ice harvesting machine.

It's Grandparents Day at Ella Mentry School! Alexia's grandmother Mrs. Master makes weird inventions for a living, but A.J. and the gang come up with the weirdest invention of all. And they're going to make a bazillion dollars from it! Will they succeed? Or will their great big idea be flushed down the drain?

"If Lonely Bird is a bird, why doesn't she have feathers and wings like the birds she sees through the windows of her home? Why can't she fly? A curious and inventive soul, Lonely Bird studies drawings of old-fashioned flying machines, conducts delicate experiments with feathers, and constructs her own little marvels as she pursues her elusive goal. Will the inevitable bumps and perils along the way ground her for good, or will she rise up to try...