When Rosie is unable to invent a contraption to help one of Aunt Rose's Raucous Riveters friends, she calls on classmates Iggy Peck and Ada Twist to help.

You can't just ask for the chance to fly . . .

When his dad announced they were moving to Iowa, Brian looked forward to making some new friends. But on his first day there he makes an enemy instead — Frankie Heller, the meanest kid in town. Brian needs to hang out with someone cool to get back on track. . . .Alex has always been the coolest guy around, and good with money, just like his dad. But now the family is struggling, and he needs...

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.

When Katharine Tulman foils an attempt to kidnap her Uncle Tully, she finds herself caught up in international intrigue. Aware that there are people who want to turn her uncle's mechanical fish into an explosive device, and unsure of who to trust, she decides to fake her uncle's death and flee to Paris in search of Lane Moreau, her uncle's assistant.

Baron von Bubbles (Bub) is a pug who wants nothing more than to help his human Bella in her craft projects for school, though he is a little apprehensive about the rocket she is making for the Inventor Challenge--so when he ruins the rocket while trying to get at Nutz the squirrel he needs to find a way to make it up to Bella.

Nine-year-old Fergus Crane's life is filled with classes on the school ship Betty Jeanne, interesting neighbors, and helping with his mother's work until a mysterious box flies into his window and leads him toward adventure.

Andrew, his cousin Judy, and Thudd the robot wind up at a garbage dump when Andrew's latest invention, the Goa Constrictor, shrinks them to the size of beetles and swallows them.

For their first assignment in fourth grade Finley has to think of an invention that will help the world--but when her Supersonic Sibling Sublimator appears to work too well, and her annoying older brother vanishes, only to reappear laughing at the trick he played, Finley comes up with a new invention she is sure will be a hit.

When Uncle Al is kidnapped by Dr. Kron-Tox and sent to prehistoric times, Andrew, his cousin Judy, and Thudd the robot try to use Uncle Al's latest invention, the Time-A-Tron, to rescue him, and learn first-hand about the origins of the universe.

Ethan Cheeseman and his children, ages eight, twelve, and fourteen, hope to settle in a nice small town, at least long enough to complete work on a time machine, but spies and goverment agents have been pursuing them for two years and are about to catch up.