Math rocks! At least it does in the gifted hands of Sean Connolly, who blends middle school math with fantasy to create an exciting adventure in problem-solving. These word problems are perilous, do-or-die scenarios of blood-sucking vampires (How many months would it take a single vampire to completely take over a town of 500,000 people?), or a rowboat of 5 shipwrecked sailors with a single barrel of freshwater (How much can they drink, and for how long, before they go mad from thirst???). Each problem requires readers to dig deep into the tools they’re learning in school to figure out how to survive. Kids will love solving these problems. Sean Connolly knows how to make tough subjects exciting and he brings that same intuitive understanding of what inspires and challenges kids’ curiosity to the 24 problems in The Book of Perfectly Perilous Math. These problems are as fun to read as they are challenging to solve. They test readers on fractions, algebra, geometry, probability, expressions and equations, and more. Use geometry to fill in for the ship’s navigator and make it safely to the New World. Escape an evil Duke’s executioner by picking the right door—probability will save your neck.

Stand back! Genius at work! Encase your little bother in a giant soap bubble. Drop mentos into a bottle of diet soda and stand back as a geyser erupts. Launch a rocket made from a film canister. Here are 64 amazing experiments that snap, crackle, pop, ooze, crash, boom, and stink. Giant air cannons. Home-made lightning. Marshmallows on steroids. Matchbox microphones. There’s even an introduction to alchemy. (Not sure what that is? Think “medieval wizard.”) None of the experiments requires special training, and all use stuff found in the kitchen or in the garden shed. You’d be irresponsible not to try them. ATTENTION, PARENTS: Yes, your kids may need your help with a few experiments. And yes, sometimes it may get a tad messy. But it’s not pure mayhem. The balloon rocket whizzing through the garden? It demonstrates Newton’s Third Law of Motion. That chunk of potato launched across the kitchen from a tube? Welcome to Boyle’s Law. Every experiment demonstrated real science, at its most memorable.

Math rocks! At least it does in the gifted hands of Sean Connolly, who blends middle school math with fantasy to create an exciting adventure in problem-solving. These word problems are perilous, do-or-die scenarios of blood-sucking vampires (How many months would it take a single vampire to completely take over a town of 500,000 people?), or a rowboat of 5 shipwrecked sailors with a single barrel of freshwater (How much can they drink, and for how long, before they go mad from thirst???). Each problem requires readers to dig deep into the tools they’re learning in school to figure out how to survive. Kids will love solving these problems. Sean Connolly knows how to make tough subjects exciting and he brings that same intuitive understanding of what inspires and challenges kids’ curiosity to the 24 problems in The Book of Perfectly Perilous Math. These problems are as fun to read as they are challenging to solve. They test readers on fractions, algebra, geometry, probability, expressions and equations, and more. Use geometry to fill in for the ship’s navigator and make it safely to the New World. Escape an evil Duke’s executioner by picking the right door—probability will save your neck.

Here comes the future! The world’s coolest technology comes to life with fun, hands-on experiments for kids. • Test solar power with milk jugs and balloons • Understand genome technology with food coloring • Launch your own “microsatellites” into orbit These 27 terrific experiments use basic stuff from around the house and will help you understand the fascinating and potentially scary world of driverless cars, artificial intelligence, robots and androids, 3-D printing, test-tube meat, smart clothing, and more. Through cool illustrations, photos, and Sean Connolly’s clear and always-lively writing, you’ll learn what each breakthrough means, how it can improve our lives, and what its downside might be. An elevator leading into outer space? A robot that learns to think for itself? What could possibly go wrong? Attention, parents: It’s time to put the “T” in STEM! You’ve probably heard that acronym, which stands for the core subjects of Science, Technology, Engineering, and Math. And though technology can get pretty scary in our imaginations, these experiments give your kids a hands-on understanding of the principles behind the innovations—so no, they won’t be performing laser surgery on their siblings or reprogramming the GPS in your car. (But they’ll still have fun!)

It’s hands-on science with a capital “E”—for engineering. Beginning with the toppling of the Colossus of Rhodes, one of the seven wonders of the ancient world, to the destructive, laserlike sunbeams bouncing off London’s infamous “Fryscraper” in 2013, here is an illustrated tour of the greatest engineering disasters in history, from the bestselling author of The Book of Totally Irresponsible Science. Each engineering disaster includes a simple, exciting experiment or two using everyday household items to explain the underlying science and put learning into action. Understand the Titanic’s demise by sinking an ice-cube-tray ocean liner in the bathtub. Stomp on a tube of toothpaste to demonstrate what happens to non-Newtonian fluids under pressure—and how a ruptured tank sent a tsunami of molasses through the streets of Boston in 1919. From why the Leaning Tower of Pisa leans to the fatal design flaw in the Sherman tank, here’s a book of science at its most riveting.

Why does a knuckleball flutter? Why do belly flops hurt so much? Why would a quarterback prefer a deflated football? Here are 54 all-star experiments that demonstrate the scientific principles powering a wide variety of sports and activities—and offer insights that can help you improve your own athletic skills. How does a black belt karate chop her way through a stack of bricks? Use Popsicle sticks to understand why it’s possible and learn the role played by Newton’s second law of motion. Does LeBron James really float through the air on the way to a dunk? Use a tennis ball, a paperback book, and the help of a friend to understand the science of momentum and the real meaning of hang time. Using common household objects, each project includes step-by-step instructions, tips, and a detailed explanation of how and why the experiment worked. It’s a win-win. The thrill of victory, the agony of defeat—it’s all in the science.

From Sean Connolly, the master of messy and dangerous (and therefore extra-fun) science, a collection of more than 20 hands-on experiments that are like an interactive journey through the periodic table of elements. In this introduction to chemistry for STEM-curious kids ages 9 and up, each chapter of The Book of Ingeniously Daring Chemistry focuses on a single element—its properties, how it was discovered, and even its potential danger level. Easy-to-follow experiments help readers put their newfound knowledge into action. All that’s needed is a sense of adventure and some items from around the house. Make your own fossil with silicon. Use a pinhead and measure 166 feet of string for a mind-boggling insight into how a hydrogen atom is built. Discover oxygen and oxygenation by slicing an apple and seeing what happens an hour later. Harness the power of zinc with a potato clock. And enjoy a special hands-off feature about the “Dirty Dozen”—those nasty elements, from arsenic to plutonium, that can wreak havoc wherever they appear (there are no experiments using these chemicals). Matter really matters, and now you’ll really understand why.

Never before published in a single volume, Tolkien's four novellas ("Farmer Giles of Ham, Leaf by Niggle, Smith of Wootton Major," and "Roverandom") and one book of poems ("The Adventures of Tom Bombadil") are gathered together in a fully illustrated set.

New York Times bestseller! Now a Netflix Series! “Packs plenty of information into a high-flying adventure.” —School Library Journal “Adventure, humor, and smart, likable characters make for a winning chapter book.” —Kirkus Reviews From the #1 New York Times bestselling team Andrea Beaty and David Roberts who created Ada Twist, Scientist and Iggy Peck, Architect comes a spirited story full of adventure, friendship, and science! This is a unique and exciting series of children’s chapter books for children, parents, and teachers who want to make STEM (Science, Technology, Engineering, and Math) fun. In Ada Twist and the Perilous Pants, Ada must rely on her curious mind, her brave spirit, and her best pals Rosie Revere and Iggy Peck to solve a mystery in her own backyard. Ada Twist is full of questions. A scientist to her very core, Ada asks why again and again. One question always leads to another until she’s off on a journey of discovery! When Rosie Revere’s Uncle Ned gets a little carried away wearing his famous helium pants, it’s up to Ada and friends to chase him down. As Uncle Ned floats farther and farther away, Ada starts asking lots of questions: How high can a balloon float? Is it possible for Uncle Ned to float into outer space? And what’s the best plan for getting him down? Collect the Whole Series: Rosie Revere and the Raucous Riveters: The Questioneers Book #1 Ada Twist and the Perilous Pantaloons: The Questioneers Book #2 Iggy Peck and the Mysterious Mansion: The Questioneers Book #3 Sofia Valdez and the Vanishing Vote: The Questioneers Book #4 Ada Twist and the Disappearing Dogs: The Questioneers Book #5 Aaron Slater and the Sneaky Snake: The Questioneers Book #6

While piloting his spaceship through the skies, Captain Invincible encounters three-dimensional shapes, including cubes, cylinders, and pyramids.