Mathematics of Discrete Structures for Computer Science

Princess Cali and her twin brother, Prince Cruise, are expected to do everything together -- but at the Royal Mermaid Rescue Crew School, Cali wants to stand out on her own. So when the principal announces a Rescue Crew Tournament to name the top merstudent of the year, Cali is thrilled. This is the perfect way to prove herself!But Cruise is a tough competitor. Will Cali do anything to win...even something fishy?

Fans of Rainbow Magic and Mermaid Tales will love this new series full of adventures under the sea!

The students are sick and tired of Spaghetti-and-Meatball Mondays in the cafeteria. The administration says they can help create a new menu, so students throughout the school make booths with their fa

Livvy and Jayden are the stars of their school's robotics team. Livvy is especially enthusiastic because her own mother works in a robotics lab and experiments with Artificial Intelligence. To impress

Nory Horace can turn herself into a kitten. But sometimes she adds in a bit of dragon and, well, accidentally turns into a dritten. Oops? Her friend Andres Padillo can fly high . . . but then he can't

The Thea Sisters participate on a dig at Hierapolis. During their visit to the excavation site, Professor Brenninger unearths a series of priceless and very old figurines. But the Thea Sisters soon fi

Since the opening of Glacier National Park in 1910, there were no reported fatal bear attacks until one summer night in 1967, when two grizzlies attacked campers and killed two young women. Inspired b

(31-40) Geronimo Stilton (10本平裝本)#31: The Mysterious Cheese Thief (Geronimo Stilton)#32: Valley of the Giant Skeletons (Geronimo Stilton)#33: Geronimo and the Gold Medal Mystery (Geronimo Stilton)#34: Geronimo Stilton, Secret Agent (Geronimo Stilton)#35: A Very Merry Christmas (Geronimo Stilton)#36: Geronimo's Valentine (Geronimo Stilton)#37: The Race Across America (Geronimo Stilton)#38: A Fabumouse School Adventure (Geronimo Stilton)#39: Singing Sensation (Geronimo Stilton)#40: The Karate Mouse (Geronimo Stilton)

That's the way the cookie crumbles!Yum! Our magic mirror has dropped me and my brother, Jonah, into the story of Hansel and Gretel. If we're lucky, we may even get to taste the cake-house. . . But we

1961年，柏林圍牆一夜升起。葛塔的世界，被硬生生劃成東與西。父親與哥哥滯留西柏林，她與母親、弟弟困在東柏林。士兵持槍巡邏，鄰居彼此猜疑——整座城市像一座監牢。直到某天上學途中，葛塔看見父親站在西邊瞭望台，用奇怪的動作比劃著訊號。她明白了：父親要她挖地道，逃出去。但只要被發現，代價就是死亡。在監視與背叛無所不在的年代，自由，必須用勇氣換取。With the rise of the Berlin Wall, twelve-year-old Gerta finds her family suddenly divided. She, her mother, and her brother Fritz live on the eastern side, controlled by the Soviets. Her father and middle brother, who had gone west in search of work, cannot return home. Gerta knows it is dangerous to watch the wall, to think forbidden thoughts of freedom, yet she can't help herself. She sees the East German soldiers with their guns trained on their own citizens; she, her family, her neighbors and friends are prisoners in their own city.But one day, while on her way to school, Gerta spots her father on a viewing platform on the western side, pantomiming a peculiar dance. Then, when she receives a mysterious drawing, Gerta puts two and two together and concludes that her father wants Gerta and Fritz to tunnel beneath th

The Schoolhouse Blizzard, also known as the Children's Blizzard or the Great Blizzard of 1888, caught people completely by surprise and resulted in 235 fatalities, including several children in one-ro

This is it. Vega Jane's time. She's been lied to her whole life, so she breaks away from Wormwood, the only home she's ever known, in search of the truth. She battles horrors to fight her way across t

Some people in school are afraid of the kids in the Upside-Down Magic class. Others just call them flops. But Nory and her friends in Upside-down Magic won't let that stop them. Not with a school-wide

I am not the kind of mouse who spends money on useless things. But one day I kept getting packages of things I did not order or need. Someone on the Internet had stolen my identity! Professor Margo Bi

Oh, no! One of the special miceking helmets in miceking leader Sven the Shouter's private collection has been stolen! Could it have been taken by the vilekings-the rival mouse clan? The micekings jour

The micekings have received a mysterious message in a bottle! Unfortunately, most of it has been damaged by water -- but Geronimo can tell it's from the Oofa Oofas, the laziest rodents in the ancient

A tour de force from acclaimed author Alan Gratz (Prisoner B-3087), this timely and powerful novel tells the story of three different children seeking refuge. JOSEF is a Jewish boy living in 1930s Naz

Geronimo's cousin Trap Stiltonoot is stung by a dangerous cavefly, which causes him to fall into an instant, deep sleep! To cure him, Geronimo and Thea must seek out the petals of the pink stinkrose,

The kids in Upside-Down Magic know their magic is a little out of control. But that doesn't make them weird--it only makes them human.Strange things are happening at Dunwiddle Magic School-and the Ups

One of the Thea Sisters' favorite authors, a famouse mystery writer, has disappeared! To find him, the five mice travel to his native Iceland. Together they traverse the stunning landscape and reconst

It's never easy when your magic goes wonky.For Nory, this means that instead of being able to turn into a dragon or a kitten, she turns into both of them at the same time -- a dritten.For Elliott, the

The Thea Sisters are visiting a friend in sunny California -- and she invites them to the set of a movie in Hollywood! The mice love being around famouse and fabumouse directors and actors as they're

In May of 1937, the Hindenburg, a massive German airship, caught fire while attempting to land in New Jersey, killing 35 people. Lauren Tarshis's latest thrilling addition to theNew York Times bestsel

My family and I, Geronimo Stilton, were invited to Lisbon, Portugal, to retrace the journey of the great explorer Vasco da Gama. He was the first European to reach India by sea -- and was apparently a

Ranger is a time-traveling golden retriever with search-and-rescue training. In this adventure, he goes to a Maryland plantation during the days of American slavery, where he meets a young girl named

When you're with me, Geronimo Stilton, it's always a fabu-mouse adventure!Sally Ratmousen broke some shocking news: The Rodent's Gazette was out of money and in danger of closing. Then Grandfather Wil

The next book in the New York Times bestselling I Survived series will place readers right in the middle of the deadly Joplin Tornado of 2011.The 2011 Joplin tornado was a catastrophic tornado that st

NAACP Image Award winner and ALA Notable, this luminous, celebrated novel in verse is now in paperback.Serafina made a secret promiseto go to school and learn to readso she can become a doctorwith her best friend, Julie Marie.But following her dream isn't easy-endless chores, little moneyand stomach-rumbling hungerall test her resolve.When an earthquake hits and separates Serafina from friends and family,she encounters her biggest test of all.Serafina made a secret promise.Will she survive to keep it?有色人種進步協會形象獎得主，美國圖書館協會推薦童書莎拉菲娜與自己約定好：他要去學校讀書，並與她最好的朋友一起成為醫生。實現夢想的路很困難，他總有做不完的家事、永遠不夠的錢與總是餓到咕嚕嚕叫的肚子。有天，地震襲擊莎拉菲娜的家鄉，使得他與家人朋友分隔，莎拉菲娜該如何度過這場危機，繼續她與自己的約定呢？

From Dav Pilkey, creator of Captain Underpants, and acclaimed artist Dan Santat, a thrilling friendship adventure with all-new full-color illustrations and mini-comics throughout!Ricky Ricotta loves h

The original series from the Master of Fright--now a major motion picture in theaters August 7, 2015!The original books featuring the scariest creatures from the Goosebumps movie, in theaters August 7

During the infamous eruption of Mount Vesuvius, one boy struggles to escape. Can he survive the most devastating disaster of ancient times?In this thrilling addition to the bestselling I SURVIVED seri

From Dav Pilkey, creator of Captain Underpants, and acclaimed artist Dan Santat, an out-of-this-world friendship adventure with all-new full-color illustrations!Ricky Ricotta may be a small mouse, but

Once again my brother and I are in hot water . . .We weren't planning to mess up the fairy tales. The first two times we did it by accident. But when our magic mirror pulls us into the story of the Li

In one of the darkest periods in history, one boy struggles to survive...In this gripping new addition to the bestselling I SURVIVED series, a young Jewish boy escapes the ghetto and finds a group of

The Wings of Fire saga continues with a thrilling underwater adventure--and a mystery that will change everything!The lost heir to the SeaWing throne is going home at last.She can't believe it's final

Each Geronimo Stilton book is fast-paced, with lively full-color art and a unique format kids 7-10 will love.I, Geronimo Stilton, was off to the wildest part of Brazil -- the Amazon jungle! I ended up

From the fantastic author of The Lonely Hearts Club and Prom & Prejudice comes a story of all the drama and comedy of four friends who grow into themselves at a performing arts high school.Chasing

Updated to include all of the most recent records!Whether kids want to know what the world's deadliest snake is, which country eats the most chocolate, who has the most career touchdowns in the NFL, o

The terrifying details of the 1906 San Francisco earthquake jump off the page!Ten-year-old Leo loves being a newsboy in San Francisco -- not only does he get to make some money to help his family, he'

This Newbery Honor book by award-winning, bestselling author Nancy Farmer is being reissued in paperback!The year is 2194, and Tendai, Rita, and Kuda are the children of Zimbabwe's wealthy and powerfu