The explosive finale to Scholastic's mega-selling series. Throughout the hunt for the 39 Clues, Amy and Dan Cahill have uncovered history's greatest mysteries and their family's deadliest secrets. But are they ready to face the truth about the Cahills and the key to their unmatched power? After a whirlwind race that's taken them across five continents, Amy and Dan face the most the difficult challenge yet - a task no Cahill dared to imagine. When faced with a choice that could change the future of the world, can two kids succeed where 500 years worth of famous ancestors failed?

Bestselling author Jude Watson takes Amy and Dan on a thrill-packed ride for the 4th installment of The 39 Clues series. Betrayed by their cousins, abandoned by their uncle, and with only the slimmest hint to guide them, fourteen-year old Amy Cahill and her younger brother, Dan, rush off to Egypt on the hunt for 39 Clues that lead to a source of unimaginable power. But when they arrive, Amy and Dan get something completely unexpected - a message from their dead grandmother, Grace. Did Grace set out to help the two orphans . . . ore are Amy and Dan heading for the most devastating betrayal of them all?

Minutes before she died Grace Cahill changed her will, leaving her descendants an impossible decision: "You have a choice - one million dollars or a clue." Grace is the last matriarch of the Cahills, the world's most powerful family. Everyone from Napoleon to Houdini is related to the Cahills, yet the source of the family power is lost. 39 Clues hidden around the world will reveal the family's secret, but no one has been able to assemble them. Now the clues race is on, and young Amy and Dan must decide what's important: hunting clues or uncovering what REALLY happened to their parents. The 39 Clues is Scholastic's groundbreaking new series, spanning 10 adrenaline-charged books, 355 trading cards, and an online game where readers play a part in the story and compete for over $100,000 in prizes. The 39 Clues books set the story, and the cards, website and game allow kids to participate in it. Kids visit the website - www.the39clues.com - and discover they are lost members of the Cahill family.Experience the complete adventure with Dan and Amy Cahill in this fantastic 10 book series collection - including the finale 39 Clues Book 10: Into the Gauntlet!

Amy and Dan have been found unharmed, but perhaps not for long. With the ruthless Irina Spasky is right on their tail, Dan and Amy embark on their most dangerous quest yet, one that brings them face to face with the only force capable of scaring the vicious Lucians: the Madrigals.

Serious games provide a unique opportunity to engage students more fully than traditional teaching approaches. Understanding the best way to utilize games and play in an educational setting is imperative for effectual learning in the twenty-first century. Gamification: Concepts, Methodologies, Tools, and Applications investigates the use of games in education, both inside and outside of the classroom, and how this field once thought to be detrimental to student learning can be used to augment more formal models. This four-volume reference work is a premier source for educators, administrators, software designers, and all stakeholders in all levels of education.

From National Book Award-winning author Judy Blundell, a thrilling account of the San Francisco Earthquake of 1906. When Minnie Bonner's father disappears after losing the Bonners' Philadelphia tavern, the wealthy gentleman Edward Sump, led by his avaricious wife, offers Minnie a chance to work as a lady's maid to support her family. The Sumps have grand plans, grander than the city of Philadelphia can offer, however, and decide to move to San Francisco -- the greatest city in the west. But when a powerful earthquake strikes, Minnie finds herself the sole survivor among them. After the dust settles, Minnie discovers a bag belonging to the Sumps filled with cash and papers that could drastically change her fortune. With no one else to claim it, Minnie has turned into an heiress overnight. Wealth comes at a price, though, and she is soon wrapped up in a deception that leads her down a dangerous path. As the aftermath of the earthquake ravages the city, Minnie continues to maintain her new identity. That is, until a mysterious but familiar stranger appears.