space and time

When someone uses futuristic technology to play pranks on twelve-year-old Dorso Clayman, he and his best friend set off on a supposedly impossible journey through space and time trying to stop the gamesters who are endangering the universe.

A young boy listens to his great-grandmother's tales of Green Knowe as it used to be and, gradually, as past and present blend, he shares the strange adventures of the former inhabitants.

The reader chooses which adventures he wants to go on after he finds the cave of time.

The magic tree house whisks Jack and Annie away to Australia where they must save some animals from a wildfire.

"Rose Montgomery parks her family's trailer in Fort Glory, Oregon with one goal: to carve out a new life for herself and her little brother, Charlie. They need a fresh start for their family, and she thinks she's finally found it in a town where nobody knows them. But Rose's plans come crashing down when, in an instant, Fort Glory disappears and every person in town vanishes into thin air--including Charlie. Rose and four other teens become trapped in the Fold, a patch of woods caught halfway between the real world and the lost town. In the Fold, a mysterious force suspends the laws of physics, and everyone's inner darkness has the power to kill. To survive the Fold, Rose must unravel the clues Charlie sends her from the missing town. And Rose has to find Charlie soon--or he'll be gone forever"--Provided by publisher.

When demons begin appearing on Earth unpredictably, foreshadowing a cataclysmic breakdown of their magic, Artemis and his friends face a new foe--a twelve-year-old girl whose intellect just might match Artemis's own--as they try to prevent catastrophe.

Fifteen-year-old Bobby Pendragon enters a virtual world to defeat the evil Saint Dane and finds himself tempted to leave the real world behind.

Meg Murry and her friends become involved with unearthly strangers and a search for Meg's father, who has disappeared while engaged in secret work for the government.

Frank Einstein and his friends find themselves competing with T. Edison, their classmate and rival, in studying the science and mysteries of the universe.