Resultados para "David" en Ciencia y tecnología

Anna y sus amigos se dirigen al Faro de las Tormentas para disfrutar de un merecido descanso frente al mar. Claro que descansar no resulta fácil junto a Nino, el hermano pequeño de Ángela. Sobre todo cuando este aparece con una niña misteriosa que se ha perdido en mitad de la playa y que habla un extraño idioma… ¿De dónde habrá salido?

Anna y sus amigos están montando una obra de teatro sobre Lobelia de Loboblanco, la más famosa hechicera de Moonville. ¡Y también la más misteriosa! Algunos vecinos la consideran una gran heroína que ayudó a todos con su magia. Otros creen que fue una bruja malvada que hechizó a un enorme lobo para que atacara al pueblo, pero… ¿qué ocurrió realmente?

David Karp developed Tumblr after he tried to start a blog and found the process daunting. With most platforms a blogger faces a huge, empty text box that begs to be filled with words. It was intimidating for a guy who'd never blogged before. Karp had the idea for tumblelogging - creating short blog posts - and built Tumblr as a platform. It lets users easily post both text and images, making Tumblr highly visual and expressive.

Have you ever wished you could go to the moon? Learn about Neil Armstrong, Edwin Aldrin, and their fellow astronauts on the Apollo 11 who took the first steps on the moon! Discover the process and challenges that NASA overcame to safely send people to the moon with engineering and physics. Understand how this historical moment affected space exploration for countries all over the world.

Follow along this brief history of the pursuit of perpetual motion machines and how this endeavor led to the laws of physics we have today. From Robert Park's generator-rigged bicycle, to Robert Fludd's self-running bicycle, to the steam engines of the 19th century, these stories offer a peek into some of mankind's successes and failures when it comes to the exploration of science and advancement.

Aden and Naila guide us around their tropical home country of the Maldives. Are you ready to snorkel over colorful coral reefs and be surrounded by thousands of species of fish? Get a taste of the delicious seafood eaten in the islands, and watch the traditional dances of the Maldives on the white sand beaches. Learn about the culture and religion and how the country is working to protect its natural environment.

In this book, brother and sister Celia and Friedrich take us on a nationwide adventure around the European country of Austria. They give us a glimpse into the lives of their medieval ancestors and show us around their home city of Vienna. Jump aboard a train that has some of the most beautiful views in the world, learn about Austria’s rich history and the cultural traditions that the Austrian people still follow today. Have you ever dreamed of diving into crystal clear freshwater lakes, going berry picking in the forests with friends, and tasting some delicious local desserts?

You and your whole family are invited on a journey around the world. We’re heading on an adventure to explore different cultures, beliefs, and religions, as well as the holidays and festivals that bring people joy. From Iran to Israel to Mexico to Japan, we’re planning on stopping off to experience a taste of the festivities celebrated across the globe. In this one-of-a-kind kids’ documentary series, local children will give you a sneak peek at their religious beliefs, celebrations, customs, and traditions.

Wouldn't you like to take a family vacation to a place you've never been, right now? You and your entire family are invited to come and experience, learn, feel, and imagine what life in other countries all over the world is like for other kids! Visit fascinating countries around the world without ever having to leave your home with a kids’ documentary series that teaches an appreciation for both culture and biodiversity by country worldwide.

In this book, Joaquin and Yocsary take us on an exciting and unforgettable adventure around the unique Central American country of Costa Rica. Are you ready to take a majestic walk in the cloud forests and visit tropical blond and black sand beaches all in the same country? Feel free to jump into the ocean and go surfing. Visit hot spring sites and learn more about the wonderful biodiversity in the Costa Rican jungle.

In the 1800s, the moist soil of the Midwest would stick to plow blades, stopping the farmers as they plowed. Young blacksmith John Deere knew about the problem, so he designed and built a self-scouring plow. With this small start, he founded the famous farm implement company Deere & Company and started down the road to success.

Nine remarkable men produced inventions that changed the world. The printing press, the telephone, powered flight, recording, and other innovations have made the modern world what it is. But who had these ideas and made realities of them? As David Angus explains, they were very different: quiet, boisterous, confident, or withdrawn. But all had a moment of vision that they combined with single-minded determination to battle through numerous obstacles and produce something that really worked.

One thing that hasn't changed much at all in the last 10,000 years is the human brain. The relentless curiosity of the human mind, combined with our ability to solve problems, has resulted in huge innovation and change. Here, then, are some of the most revolutionary ideas of the last 300 years.

In this engaging young readers edition of The Monster’s Bones, David K. Randall journeys from prehistory to present day on a gripping, gritty expedition through the history of one of the world’s greatest scientific discoveries. At its heart are two men from vastly different backgrounds: socialite Henry Fairfield Osborn, the president of the fledgling—and struggling—American Museum of Natural History, and intrepid fossil hunter Barnum Brown, who blazed a path out of his small-town life in Kansas with an uncanny gift for uncovering dinosaur bones.

Newly reintroduced along with his pack to Yellowstone National Park, Wolf 8 struggles at first. Small and bullied by his siblings, he must learn to fend for himself in his new home, learning to hunt, compete for food, and even stand up to a grizzly bear 10 times his size. One day, little 8 meets an alpha female raising a litter of pups on her own. Her mate was killed by humans. Can little 8 rise to the occasion and help the young family survive? Is he ready to be an alpha wolf?

The insect world is a fascinating place. You may not think so. You may think insects are gross. Or scary. Or dangerous. But there’s so much more to insects than what meets the eye. Told through hilarious prose and packed full of jaw-dropping facts, Brenna Maloney’s first-person narrative presents the big picture on bugs. Insects play a critical role on our planet—as pollinators, garbage collectors, artistic muses, research partners, and even as “dinner.”

Lena Blackburne loved baseball. He watched it, he played it, he coached it. But he didn't love the ways players broke in new baseballs. Tired of soggy, blackened, stinky baseballs, he found a better way. Thanks to a well-timed fishing trip and a top-secret mud recipe, Lena Blackburne Baseball Rubbing Mud was born. For seventy-five years, baseball teams have used Lena's magic mud to prepare baseballs before every game. Listen to the story of how Lena's mud went from a riverbank to the major leagues and all the way to the Hall of Fame.

Examines wedges, explains their functions, and suggests simple experiments to demonstrate how they work.

Examines inclined planes, explains their functions, and suggests simple experiments to demonstrate how they work.

Examines levers, explains their functions, and suggests simple experiments to demonstrate how they work.