George and Harold, and their doubles, Yesterday George and Yesterday Harold, have a good thing going. Two of them go to school, while the other two hide in the tree house and play video games all day-then they switch! But when their malicious gym teacher, Mr Meaner, creates a method of mind control that turns their fellow students into attentive, obedient, perfect children, the future of all humanity will be in their hands!

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.

Felicio, a young inventor, attempts to create the perfect present for his father's birthday, hoping that it will make his very serious father laugh.

"With a plot combining science and the supernatural, four kids are caught up in a dangerous plan concocted by the eccentric inventor, Nikola Tesla"--

After escaping from the belly of a whale, Andrew and his cousin Judy face more dangers from their underwater nemesis, Soggy Bob, in the Great Barrier Reef.

In rhyming text Princess Truly, super girl, uses her magic curls to build things, including a bike for her brother, who has outgrown his old one, and a super snack machine.

On a two-day train trip to enter his invention in the National Science Competition in Washington, D.C., fourteen-year-old Steven "Steel" Trapp, possessor of a remarkable photographic memory, becomes embroiled in an international plot of kidnapping and bribery that may have links to terrorists.

Ruby is determined to win the gold with her fifth-grade science fair project, a Rube Goldberg machine to help her grandfather, but the real prize turns out to be something completely unexpected.

Sent to live with her chef father and his wife in Oregon after having stayed with her inventor uncle and scientist mother in Cincinnati, ten-year-old misfit Megan is lonely until she starts working with some computer-savvy mice to try to save Mouse Nation--and the planet.

"It is up to Nick Slate to find the last of Nikola Tesla's powerful inventions--or face devastating consequences"--