検索キーワード： 物事の仕組み

Hear about some of the world's biggest building blunders. Find out how each structure failed, the basic building block that was missed during construction, and what engineers learned from their mistakes.

The world can be a dangerous place. Over time, animals evolved many natural defenses to help them survive. Combat during wartime is extremely dangerous. Why not look to nature to find the best defenses for soldiers on the battlefield? Military forces have done just that for hundreds of years. From the armor of medieval knights to tomorrow's advanced camouflage, learn how military technology often mimics the traits of animals to help protect soldiers in combat. Then be sure to catch the other amazing titles in the Beasts and the Battlefield series.

Animals have played an important role in warfare throughout history. Military forces have long relied on animals' natural abilities to achieve their missions. From medieval warriors charging into combat on horseback to dolphins locating explosive mines at sea, learn about the many ways animals have helped armies find success on the battlefield. Then be sure to catch the other amazing titles in the Beasts and the Battlefield series.

In the wild, animals use teeth, claws, and other natural weapons to attack their prey. On the battlefield, soldiers need weapons to fight the enemy. Military forces have often looked to nature for inspiration to develop effective weapons and combat tactics. From the first feathered arrows to tomorrow's high-tech weaponry, learn how military technology often imitates the natural weapons of animals to help soldiers succeed in combat. Then be sure to catch the other amazing titles in the Beasts and the Battlefield series.

Time is central to our experience as humans, and it's important for children to know not just how to tell the time, but also how to make the most of it. About Time will help them learn how to tell the time on a variety of devices, and about all the different ways humans have tried to do this. Through unique and fun interactive elements, the book will also help children understand how clocks work and even build some time-telling and clockwork devices for themselves!

Does your child love to build, explore, experiment, and ask big questions about the world around them? Noa The Little Scientist: STEM Careers for Curious Kids introduces young listeners to a wide variety of fun, exciting, and real-world science, technology, engineering, and math (STEM) careers.

Do you know where your clothes come from? Learn about the processes of making certain materials that are used in clothing! Guess what plant or animal that rubber boots come from? What material is made from plastic bottles? You’ll be surprised to learn how the clothes you wear everyday are manufactured!

Click and his friends wish to live in their favorite tree like the friendly squirrels. They decide to build a treehouse—but first they must collect the necessary materials and learn what tools they'll need for the job! They find a hammer, saw, level and measuring tape. What safety tools with they need to build their treehouse?

What would we do without wheels? We use wheels for all kinds of things, including transportation. Learn about alternatives for transportation other than the wheel! Do you use any of these different ways of moving around?

Have you ever seen a bird nest? Birds make all kinds of different nests! Nests are made from lots of different kinds of materials and are shaped differently. Learn about the different kinds of nests that are made by different species of birds!

Have you ever wondered how buildings are created? Architects have to use lots of different shapes in order to build a structure. Many geometric shapes are needed to create building designs. Can you find the different shapes in historical landmarks from all over the world?

Have you ever wondered how big cities are created? Learn how small towns start with just a few houses and farms, and then grow into large cities with many roads, buses, and skyscrapers! See how cities grow and change throughout history by the growing population of people living, working and shopping among each other.

Have you ever wondered how a penny or dime is made? Coins are made from metal in factories called mints. First, an artist draws a picture of the coin, next clay is used to make a mold made from plastic. Then a machine engraves and designs a piece of metal–these metal pieces will be used to make stamps called dies. In the United States, there are only four factories–can you guess where?

Popcorn is a yummy snack–how is popcorn cooked? From an un-popped kernel, heat boils the water that the kernel naturally has inside it. The water turns into steam after it builds up inside. Scientists used cameras to discover how corn popped! What’s inside the kernel to make an explosive change happen–turning a kernel of corn into a tasty buttery treat–popcorn?

Ada wants to win a prize one day for her inventions. She has many ideas. When it’s time to clean up her blocks, Ada has a great idea to make clean-up time easier. Ada thinks to use her father’s old socks to invent a way to stay on her two feet on an icy day! Ada’s ideas to recycle old things makes her a great inventor!

What does a light bulb require to burn bright? What happens when a light bulb burns out? Discover how filament, made of one of the heaviest metals, a mixture of two gases, a 60-watt light bulb, and electric currents make this bright idea more than just a bright light! The amazing science behind the light bulb awaits you!

In mid-1860s, two railroad companies had a huge job in front of them: building the transcontinental railroad. The railroad would run from east to west across the United States. As the grueling work began, there were many choices to make. Now, the choices are yours.

Physik ist zu kompliziert, Chemie ist langweilig und Biologie doof: Wer als Kind kaum Kontakt mit den Naturwissenschaften hatte, findet in der Schule oft nur schwer den Zugang. In 100 Experimenten zu unterschiedlichsten Themengebieten wie chemische Reaktionen, physikalisch-mechanische Effekte, Natur & Umwelt, Wetter & Klima, Pflanzen, Insekten oder Optik & Licht kann Ihr Nachwuchs nicht nur auf unterhaltsame Weise seinen Forscherdrang ausleben, sondern begreift spielerisch und altersgerecht grundlegende Zusammenhänge.

Welcome to the world of quantum physics, where particles pop in and out of existence, light behaves like a wave and a particle, and the rules of reality get turned upside down! This kid-friendly science adventure is packed with big questions, surprising answers, and many "whoa, really?!" moments.

¿Cómo aprenden divirtiéndose los niños y las niñas? Este fascinante libro da respuesta a algunas de las preguntas más interesantes y divertidas que les encanta hacer, por ejemplo: “¿Cómo pueden vivir los camellos en el desierto?” o “¿Cómo respiran los peces bajo el agua?”.