After a liver transplant, Andre suddenly becomes a time traveler, but is his soulmate Michael, who lives in 1969, or Blake, his donor's brother, who is training him in 2021?

All it takes is one hit on the football field, and suddenly Ash's life doesn't look quite the way he remembers it. Impossible though it seems, he's been hit into another dimension, and keeps falling into universes that are almost-but-not-really his own, each one stranger than the last. And if he isn't careful, the world he's learning to see more clearly could blink out of existence.

"Maya discovers stories and secrets from her family's past in Korea as her grandmother teaches her to cook and about their family's ability to time travel into memories via food"--

Travel back in time on a prehistoric journey to the world of the dinosaurs! Dive into an exciting Jurassic world and travel back in time with the Dinosaur Club. These character-driven dinosaur books explore different dinosaur species through a thrilling adventure story. Meet Jamie, a member of the Dinosaur Club. They are a network of kids around the world who love to share dinosaur knowledge, help identify fossils, post dino discoveries, and chat...

Greedy Llama travels back in time to eat his marvelous birthday donut a second time, but a Baby Llama follows him to the present, and soon his house is a chaos of cave llamas, barbarian bunnies, and Viking pigs.

"Billy Chan is having the summer most twelve-year-olds dream about--bonding with his very own dragon and exploring the magical Dragon Realm! But the new world has not been without its perils as Billy and his friends have just barely escaped the clutches of the Dragon of Death and learned of a betrayal from someone they trusted. That betrayal leads to Billy's friend Dylan being kidnapped and taken through a time portal. Now Billy, Charlotte, and Ling-Fei...

Robbed of the powerful object she needed to save her mother, time traveler Etta Spencer is stranded far from home and the privateer she loves before resolving to destroy the astrolabe, a mission that is challenged by a shattering revelation.

In Paris with his parents to sell family heirlooms, fourteen-year-old Greg Rich suddenly finds himself four hundred years in the past, and is aided by boys who will one day be known as "The Three Musketeers."

When a young boy doesn't want to go to school, his grandfather takes him back in time to show him the true meaning of being brave.

George and Harold are forced to contemplate a world without Captain Underpants.