Mathematics of Discrete Structures for Computer Science

Baseball season is heating up, and Jake's got sports on the brain. It feels harder than usual to pay attention in school, especially when the subject--art--is something Jake has always struggled with.When he finds out he has to write a report on a famous artist, Jake makes a wish for extra help ASAP. With a magic burst of sparkles, legendary baseball player Jackie Robinson and renowned artist Frida Kahlo arrive to lend their expertise!

Gregory K. has too much homework.Middle school is hard work, and Gregory tries to be a good student. He participates in class, he studies for his tests -- he and his friends even help each other with

The first middle-grade novel from Amy Sarig (A. S.) King and a boy-meets-animal story like no other!Washington Post Best Book of the YearA New York Public Library Best Book for KidsA Texas Bluebonnet Master List selectionObe Devlin has problems. His family's farmland has been taken over by developers. His best friend Tommy has abandoned him. And he keeps getting nosebleeds, because of that thing he doesn't like to talk about. So Obe hangs out at the nearby creek, in the last wild patch left, picking up trash and looking for animal tracks.One day, he sees a creature that looks kind of like a large dog. And as he watches it, he realizes it eats plastic. Only plastic. Water bottles, shopping bags... No one has seen a creature like this before. The animal--Marvin Gardens--becomes Obe's best friend and biggest secret. But to keep him safe from the developers and Tommy and his friends, Obe must make a decision that might change everything.

We'll be there in a whisker!On a bright sunny day, Thistledown Meadow is the perfect place for a nature walk. But when frisky little kitten Ginger gets stung by a bee, it's up to Dr. KittyCat to come

It's Halloween at Happy Tails School and Peachy and Keen want to uncover what's really making that "Ooooo" noise coming from the locker rooms and write about it for Purrfect9. But when they sneak into

Rachel Brooks is excited for the new school year. She's finally earned a place as a forward on her soccer team. Her best friends make everything fun. And she really likes Tate, and she's pretty sure h

Great minds think alike . . . Jake's class is gearing up for Living History Night. Every student has to do a report about a famous person in history on stage, in front of the whole school. But Jake has major stage fright . . .POP!Fortunately, Jake has some tiny geniuses to help him break a leg! First Lady of Song Ella Fitzgerald and Founding Father Benjamin Franklin know just what Jake needs. But can they help him without spilling the secret of the magic wishing well?

This year's fifth graders are the worst Principal Klein has ever seen. But he's hoping that Spirit Week can teach them teamwork, with a top secret prize for the winning team as incentive.Best friends

On the fourth day there was war . . . Following their adventures in the Border Sea, Arthur and Leaf head for home. But only Leaf gets through the Front Door. Arthur is blocked because someone . .

Join Rachel and Kirsty on their sweetest-ever fairy adventure!Kirsty and Rachel are delighted to be invited to Fairyland for the annual Candy Harvest. But when Monica the Marshmallow Fairy's magical o

Ugly Cat was supposed to meet up with his brother Tamarindo so that they could go on a search for the best albondigas (meatballs) in the neighborhood, but then Tamarindo never showed up! Now Ugly Cat

For the past three years, Grace Blakely has been desperate to find out the truth about her mother's murder. She thought it would bring her peace. She thought it would lead her to answers. She thought

Fresh from his intergalactic adventure, Victor is casting about for something new to apply his formidable know how to. The obvious next step is cello-making. However, the not so mellifluous sounds tha

The Notebook of Doom #1: Rise of the Balloon GoonsThe Notebook of Doom #2: Day of the Night CrawlersThe Notebook of Doom #3: Attack of the Shadow SmashersThe Notebook of Doom #4: Chomp of the Meat-Eat

Louie's school has dance fever! But Louie's moves aren't exactly graceful. His dance teacher doesn't know how she'll ever train a unicorn with two left feet. Lucky for her, Louie has hooves!But when L

Never do a favor for a friend.Twelve-year-old March McQuin forgot rule number one for cat burglars, which is how he and his twin sister, Jules, found themselves dangling upside down twenty feet above

Lucy is ready for her next challenge at Limbo Central Middle School: joining a club. Or actually, forming one. Lucy and her best friend Cecily were awesome ballet dancers in life, so obviously they ca

Nightshade can be deadly.Hannah and Scooter's sprawling, ramshackle house is named for the lethal plant that grows in the dark woods behind it. Hannah knows she's not supposed to explore the forest or

It's Showtime!The stage is set for an explosive Pokémon Talent Showdown! There's a juggling Exeggutor, a singing Charmander-even a dancing Farfetch'd.Ash wants to beat Gary, but he doesn't have an act

Cameron Boxer is very happy to spend his life avoiding homework, hanging out with his friends, and gaming for hours in his basement. It's not too hard for him to get away with it... until he gets so c

Peter Lee and his family always shared a passion for baseball, bonding over backlot games and the Pittsburgh Pirates. But when a devastating tragedy strikes, the family flies apart and Peter's mom bec

Clara Martinez knows what it takes to make a good match. So when her school assigns a project to create a business from scratch, Clara decides to start a matchmaking service for her fellow classmates.

For the past three years, Grace Blakely has been desperate to find out the truth about her mother's murder. She thought it would bring her peace. She thought it would lead her to answers. She thought

Cleo and Evan have a secret. A collection of books so dangerous they are locked up tight. A friend has vanished inside the pages of one of them. It's up to them to find the key that will set her free. THE CURSE OF THE FULL MOON MUST BE BROKEN!On a dark and stormy night, Cleo and Evan are haunted by a disaster. Evan has been bitten by a werewolf! If they can't find the cure -- and the right key -- before the full moon rises, he'll be stuck prowling the pages of this ghost story for good!

Gretel joins the Grimmtastic quest for justice in a world where the E.V.I.L. Society must be stopped... and finds a candy cottage along the way.The charming Grimmtastic Girls series continues!

Pearl and her friends Echo, Splash, and Flip are preparing for their first test at dolphin school! It's in Magic class, which is Echo's best subject, so she's helping them study.But then Echo loses he

Melody has lived in Royal, Indiana, for as long as she can remember. It''s been just her and her father, and she''s been okay with that. But then she overhears him calling someone Honey -- and suddenl

Cherry Hill Elementary has always had two baseball fields, one for Sylvie Scruggs's fourth-grade-and-under friends, and one for Jamie Redmond's fifth-grade crew. When Jamie's field is demolished for a

What waits Beneath?Pat O'Toole has always idolized his older brother, Coop. Coop is... different. He doesn't talk on the phone, doesn't use email, and doesn't have friends. He's never really cared for

Cecilia Murray has been wishing for a dog for as long as she can remember. And when a cute pug named Potato is brought in to Orphan Paws, the shelter where she volunteers, she knows he is the dog she'

Sinner follows Cole St. Clair, a pivotal character from the #1 New York Times bestselling Shiver Series.found.Cole St. Clair has come to California for one reason: to get Isabel Culpeper back. She fle

Eleven-year-old Otto wants a dog, and his older sister Lexi wants a cat, so their mother suggests that whoever can raise enough money to pay for their pet can choose--and so the competition begins.

Jackson Greene has a reputation as a prankster at Maplewood Middle School, but after the last disaster he is trying to go straight--but when it looks like Keith Sinclair may steal the election for sch

A new chapter book series from Major League Baseball's 2006 National League MVP, Ryan Howard!Little Rhino is so excited for his team, The Mustangs, to play their first baseball game. They've been havi

Joining his uncle for a summer at the circus, Ray becomes a clown-in-training, but strange things start happening and he wonders about a place called "Clown Street" that even the other clowns are afra

The #1 New York Times bestselling fantasy novel for all ages by master storyteller David Baldacci -- now in paperback! Why would Quentin Herms flee into the Quag? There was nothing in the Quag except

Jennifer A. Nielsen takes readers on an extraordinary journey in this final installment of the NEW YORK TIMES and USA TODAY bestselling Ascendance Trilogy. Now in paperback!War has come to Carthya. It knocks at every door and window in the land. And when Jaron learns that King Vargan of Avenia has kidnapped Imogen in a plot to bring Carthya to its knees, Jaron knows it is up to him to embark on a daring rescue mission. But everything that can go wrong does.His friends are flung far and wide across Carthya and its neighboring lands. In a last-ditch effort to stave off what looks to be a devastating loss for the kingdom, Jaron undertakes what may be his last journey to save everything and everyone he loves. But even with his lightning-quick wit, Jaron cannot forestall the terrible danger that descends on him and his country. Along the way, will he lose what matters most? And in the end, wh

Teased by all her friends at a suburban school for being artistic and always expressing herself through her drawings and paintings, Emily jumps at the chance to go to an art program in the city for th

When disaster strikes, the only thing you can count on is yourself!It had seemed like the perfect California day. But as Joey Flores walked home from the skate park with his friends, the ground began to tremble, and Joey knew they were headed for trouble....The earthquake that followed devastated their neighborhood, collapsing a nearby overpass with Joey and Fiona on one side and Kevin and Dylan on the other. Now Joey and his friends must rescue each other, endure the aftershocks, and find a new way home as the earth cracks beneath their feet.

The hilarious and bestselling series from Jim Benton continues!Jamie, Isabella, and Angeline have known each other for a long time. They've even become friends -- whether Jamie likes it or not. But wh