When a little boy is feeling afraid to go to school one day, his grandfather, Big Papa, takes him away in his time machine--a 1952 Ford--back to all of the times when he was scared of something life was handing him. "That's called being brave," Big Papa says over and over. Full of heartfelt moments and thrilling magical realism, Big Papa and the Time Machine speaks to the African American experience in a touching dialogue between two family members from different generations and emerges as a voice that shares history and asks questions about one family's experience in 20th-century black America. "Wasn't you scared" "Oh, I was scared," Big Papa said. "Sometimes you gotta walk with giants if you ever gonna know what you made of. That's called being brave."

Unable to make friends at her new school, Lizzie packs a bag and runs away. After accidentally stowing away in the TARDIS, she meets the Doctor, a mysterious woman who claims to be a time-traveling space alien. When the TARDIS malfunctions, Lizzie and the Doctor are sent catapulting through time and space, visiting the pyramids, the dinosaurs, an alien planet, and more. Along the way, Lizzie learns that making new friends isn't so hard after all . . . but will she ever be able to get back home?

Bedtime means lights out, with dark corners and spooky sounds. But it also means . . . Adventure! Because it's not a bed, it's a time machine. Our hero rides it to the coolest time of all--the age of the dinosaurs. He makes a tyrannosaurus-sized friend, who helps him become the Boss of Bedtime. While tonight's sleep will span millions of years, it'll feel like it's over in the blink of an eye.

Llama just ate a doughnut--the most scrumptious, most sprinkled doughnut in existence--and he needs to eat it again. The problem? He can't . . . He has already eaten it! The solution? A pair of time-travel pants, of course! But when Llama goes way farther back than he intended, the dessert he winds up taking has an owner who's more than willing to travel through time to retrieve it.

Max and her dog, Boomer, are in trouble. Big trouble. Max has accidentally smashed an heirloom vase: the only treasure her great-great-great-great-great-great-grandma managed to save when her houseboat sank 234 years ago. Max can come clean--or, she can build a time machine! If she travels to the past and smashes the vase then, there will be nothing for her to break in the future. Brilliant! In the time machine--surprisingly easy to construct--Max and Boomer bump around to the past and the future, tangle the string of time, and crash into the ancestral houseboat, promptly sinking it. And in the past, the vase remains intact. Disheartened, Max and Boomer return to the moment just before their adventure began, to warn themselves NOT to build a time machine. In spite of the warning, Max tosses a Frisbee for Boomer, directly in the direction of the vase, and their wild adventure begins again, and again, and again...

Ranger travels back to 1941 Hawaii, where World War II is on everyone's minds. That includes Ben Hansen, a young sailor stationed at Pearl Harbor, and twins Paul and Grace Yamada who are making their weekly market trip when Japanese bombs begin to fall from the sky. As the surprise attack puts all of Ranger's new friends in danger, his search-and-rescue training kicks in to high gear. Can he help them survive against all odds?

Twelve-year-old Rosie is a musical prodigy whose synesthesia allows her to see music in colors. Her mom has always pushed her to become a concert violinist, but this summer Rosie refuses to play, wanting a "normal" life. Forced to spend the summer with her grandparents, Rosie is excited to meet another girl her age hanging out on their property. The girl is familiar, and Rosie quickly pieces it together: somehow, this girl is her mother, when her mother was twelve. With help from this glitch in time--plus her grandparents, an improv group, and a new instrument--Rosie comes to understand her mother, herself, and her love of music in new ways.

Federico doesn't mind being a political hostage in the Pope's palace, especially now that he has a cat as a friend. But he must admit that a kitten walking into a wardrobe and returning full-grown a moment later is quite odd. Even stranger is Herbert, apparently an art collector from the future, who emerges from the wardrobe the next night. Herbert barters with Federico to get a sketch signed by the famous painter Raphael, but his plans take a dangerous turn when he hurries back to his era, desperate to save a dying girl. Bee never wanted to move to New Jersey. When a neighbor shows Bee a sketch that perfectly resembles her, Bee, freaked out, solidifies her resolve to keep to herself. But then she meets a friendly cat and discovers a mysterious cabinet in her neighbor's attic--a cabinet that leads her to Renaissance Rome. Bee, who has learned about Raphael and Michelangelo in school, never expected she'd get to meet them and see them paint their masterpieces.

When Finn is saved from the Time Rangers by an older version of himself, it comes with a catch. Old Man Finn needs Finn and his friends, Lincoln and Julep, to help him win battles he lost years ago against the Paradox, a terrible creatures obsessed with revenge against Finn's father. If they succeed, he promises to tell Finn where his father is. He even gives them a pair of time-traveling pajamas to help them with their quest. There's only one problem. The pajamas malfunction almost immediately. Along the way the kids avoid being eaten by sabretooths, shot by revolutionary war soldiers, and start a war with a town full of holograms, all in an effort to fix the jammies. Just when their goal is in sight, Julep gets sick. Only...it doesn't seem like she's sick. It seems like she's changing. The adventure may cost Finn more than an old pair of pajamas--it may cost him his friends!

It's August 1999. For twelve-year-old Michael Rosario, life at Fox Run Apartments in Red Knot, Delaware, is as ordinary as ever--except for the looming Y2K crisis and his overwhelming crush on his fifteen-year-old babysitter, Gibby. But when a disoriented teenage boy named Ridge appears out of nowhere, Michael discovers there is more to life than stockpiling supplies and pining over Gibby. It turns out that Ridge is carefree, confident, and bold, things Michael wishes he could be. Unlike Michael, however, Ridge isn't where he belongs. When Ridge reveals that he's the world's first time traveler, Michael and Gibby are stunned but curious. As Ridge immerses himself in 1999--fascinated by microwaves, basketballs, and malls--Michael discovers that his new friend has a book that outlines the events of the next twenty years, and his curiosity morphs into something else: focused determination. Michael wants--no, needs--to get his hands on that book. How else can he prepare for the future? But how far is he willing to go to get it?

Regan Fitz and Elliot Mason have been enemies since they started training to become Glitchers--people who travel through time to preserve important historical events. But everything changes when they find a letter from Regan's future self, warning them about an impending disaster that threatens them and everyone they know. Will they be able to set aside their past in order to save the future?

Eleven-year-old Ailey Benjamin Lane can dance--so he's certain that he'll land the role of the Scarecrow in his school's production of The Wiz. Unfortunately, a talented classmate and a serious attack of nerves derail his audition: he just stands there, frozen. Deflated and defeated, Ailey confides in his Grampa that he's ready to quit. But Grampa believes in Ailey, and, to encourage him, shares a childhood story. As a boy, Grampa dreamed of becoming a tap dancer; he was so good that the Hollywood star and unofficial Mayor of Harlem, Bill "Bojangles" Robinson, even gave him a special pair of tap shoes. Curious, Ailey finds the shoes, tries them on, taps his toes, and makes a wish. In the blink of an eye, he finds himself somewhere that if most definitely no place like home! Featuring an all-African-American cast of characters, and infused with references to black culture and history, this work of magical realism is sure to captivate and inspire readers.

Mason and Ty were once the very best of friends, like two nerdy sides of the same coin . . . until seventh grade, when Ava Petrakis came along. Now Mason can trace everything bad in his life to that terrible fight they had over the new girl. The one thing he'd give anything for is a do-over. But that can't happen in real life--can it? As a science kid, Mason knows do-overs are impossible, so he can't believe it when he wakes up from a freak accident and finds himself magically transported back to seventh grade. His parents aren't yet divorced and his beloved sheepdog is still alive. Best of all, he and Ty haven't had their falling-out yet. It makes no logical sense, but Mason is determined to use this second chance to not only save his friendship (and his dog!) but do other things differently--like trying out for the football team and giving new friends a chance. There's just one person he'll be avoiding at all costs: Ava. But despite his best efforts, will he be able to stop the chain of events that made his previous life implode

As far as twelve-year-old McKinley O'Dair is concerned, the best thing about living in Gap Bend, Pennsylvania, is the Time Hop--the giant party the town throws every June to celebrate a single year in history. That one day is enough to make the few things that aren't so fantastic about McKinley's life--like her crabby homeroom teacher or her super-scheduled father--worth suffering through. And when McKinley learns that this year's theme is 1993, she can't wait to enter the Time Hop fashion show with a killer '90s outfit she's designed and sewn all on her own. But when the Time Hop rolls around, nothing goes as planned. In fact, it's the biggest disaster of McKinley's life. Before she knows what's hit her, McKinley somehow finds herself in the real 1993--and it's not all kitschy parachute pants and Jurassic Park. All McKinley wants is to return to the present, but before she can, she's going to have to make a big change--but which change is the right one? This humorous and heartfelt novel about destiny and self-discovery shines a poignant light on the way life could play out--if a person is given a chance to rewind.

Maya's grandmother, Halmunee, may be losing her memory, but she hasn't lost her magic touch in the kitchen. Whether she serves salty miyeok-guk or sweet songpyeon, her stories about Korea come to life for Maya. Then one day, something extraordinary happens- one delicious bite transports Maya and Halmunee into one of Halmunee's memories. Suddenly they're in Seoul, and Halmunee is young. This is just the first of many secrets Maya will uncover- that she and her grandmother can travel through time. As Maya eats her way through the past, her questions multiply-until a shocking discovery transforms everything she thought she knew about family, friendship, loss, and time itself.

Middle school is the worst, especially for David Bravo. He doesn't have a single class with his best (okay, only) friend, Antoine. He has to give a class presentation about his heritage, but he's not sure how--or even if--he wants to explain to his new classmates that he's adopted. After he injures Antoine in an accident at cross-country practice, he just wishes he could do it all over. He doesn't expect his wish to summon a talking, shapeshifting, annoying dog, Fea, who claims that a choice in David's past actually did put him on the wrong timeline... and she can take him back to fix it. But when their first try (and the second, and the third) is a total disaster, David and Fea are left scrambling through timeline after timeline--on a quest that may lead them to answers in the most unexpected places.

After living through a dumpster fire of a Valentine's Day, Emilie Hornby escapes to her grandmother's house for some comfort and a consolation pint of Ben & Jerry's. She passes out on the couch, but when she wakes up, she's back home in her own bed--and it's Valentine's Day all over again. And the next day? Another horrendous V-Day. Emilie is stuck in some sort of time loop nightmare that she can't wake up from as she re-watches her boyfriend, Josh, cheat on her day after day. In addition to Josh's recurring infidelity, Emilie can't get away from the enigmatic Nick, who she keeps running into--sometimes literally--in unfortunate ways. How many times can one girl passively watch her life go up in flames? And when something good starts to come out of these terrible days, what happens when the universe stops doling out do-overs?

One jump to save all time Life is progressing normally for sixteen-year-old Dan Renfrew when he accidentally transports himself to England in the year 1066. He soon realizes that he's trapped there, and that's not his only astonishing discovery. Dan learns that he's descended from a long line of time jumpers--secret heroes who travel to the past and resolve glitches in the time stream that threaten to alter subsequent history. The only way Dan can return home is to set history back on its proper course in the Anglo-Saxon age. This is no easy task. A Viking horde is ravaging England in the north while a Norman army threatens to invade from the south. In between and desperately struggling to hold on to his throne is Harold Godwinson, the newly-crowned English king. Dan is fighting to ensure that events play out correctly when he finds himself plunged into an even more lethal conflict. To save history, Dan must battle a band of malevolent time jumpers whose lust for wealth and power threatens the entire future of the world.

Ren Mittal's last memory in the year 1996 is getting on a bus to visit his mystery pen pal Georgia. When he wakes up in 2122, he thinks he might be hallucinating...he's not! Tech conglomerate Chronotech sponsors a time-travel program to help students in 2122 learn what history was really like...from real-life subjects who've been transported into the future...and Ren is one of them. In 2122, Ren's life in the 1990s is practically ancient history--and Ren's not sure how to feel about that. On top of it all, he learns that his memory will be wiped of all things 2122 before he's sent back to the '90s. Adding to Ren's complicated feels, he's forming a crush on his student guide, Mars. And when he crosses paths with the absolute last person he expected to see in the future, he has a bigger problem on his hands: What if Chronotech isn't the benevolent organization they claim to be, and he and his fellow subjects are in great danger

Worlds turn. Particles spin. Love endures. There are infinite universes in which Elise never dies. Her best friend, Anna, never has to mourn her or choose between the weight of her grief and the weight of her ambition. Her cousin, Liam, never has to lose another loved one or fight to find purpose in a life that already doesn't feel like his own. But Liam and Anna do not get to choose the universe in which they live. Across multiple worlds, their paths collide as they wrestle with what it takes to save someone else and how to face love and loss on a quantum scale.

Being a first-generation Asian American immigrant is hard. You know what's harder? Being the daughter of one. Priscilla is first-generation Korean American, a former high school cheerleader who expects Sam to want the same all-American nightmare. Meanwhile, Sam is a girl of the times who has no energy for clichéd high school aspirations. After a huge blowup, Sam is desperate to get away from Priscilla, but instead, finds herself thrown back. Way back. To her shock, Sam lands in the '90s . . . alongside a 17-year-old Priscilla. Now, Sam has to deal with outdated tech, regressive '90s attitudes, and her growing feelings for sweet, mysterious football player Jamie, who just might be the right guy in the wrong era. With the clock ticking, Sam must figure out how to fix things with Priscilla or risk being trapped in an analog world forever. Sam's blast to the past has her questioning everything she thought she knew about her mom . . . and herself. One thing's for sure: Time is a mother.

Fourteen-year-old Nephele used to have friends. Well, she had a friend. That friend made the adjustment to high school easily, leaving Nephele behind in the process. And as Nephele looks ahead, all she can see is three very lonely years. Nephele is also a whip-smart lover of math and science, so she makes a plan. Step one: invent time travel. Step two: go back in time, have a do-over of 9th grade, crack the code on making friends and become beloved and popular. Does it work? Sort of. Nephele does travel through time, but not the way she planned--she's created a time loop, and she's the only one looping. And she keeps looping, for ten years, always alone. Now, facing ninth grade for the tenth time, Nephele knows what to expect. Or so she thinks. She didn't anticipate that her new teacher would be a boy from her long ago ninth grade class, now a grown man; that she would finally make a new friend, after ten years. And, she couldn't have pictured someone like Jazz, with his deep violet eyes, goofy magic tricks and the quietly intense way he sees her. After ten freshman years, she still has a lot more to learn. But now that she's finally figured out how to go back, has she found something worth staying for?

Weeks ago, Andre Cobb received a much-needed liver transplant. He's ready for his life to finally begin, until one night, when he passes out and wakes up somewhere totally unexpected...in 1969, where he connects with a magnetic boy named Michael. And then, just as suddenly as he arrived, he slips back to present-day Boston, where the family of his donor is waiting to explain that his new liver came with a side effect-the ability to time travel. And they've tasked their youngest son, Blake, with teaching Andre how to use his unexpected new gift. Andre splits his time bouncing between the past and future. Between Michael and Blake. Michael is everything Andre wishes he could be, and Blake, still reeling from the death of his brother, Andre's donor, keeps him at arm's length despite their obvious attraction to each other. Torn between two boys, one in the past and one in the present, Andre has to figure out where he belongs-and more importantly who he wants to be-before the consequences of jumping in time catch up to him and change his future for good.