検索キーワード： 制作 "-- Kevin Wright --" 物事の仕組み

If you’re looking for a great invention, look no further than your bathroom or kitchen! Did you know that the first flushing toilet was invented four thousand years ago? Or that a melted chocolate bar sparked the discovery of the microwave? Learn about these great inventions and more!

Gears are simple machines that can make up an even bigger machine, like a robot or a clock! Listen to learn about how gears make work easier.

¿Cómo funciona el airbag? ¿Por qué lloramos cuando cortamos cebollas? ¿Qué tienen de especial las telas deportivas? Acompaña a Silvana y Marina en su "día a pura química" y descubre esta disciplina apasionante. "Destacado" por la Asociación de Literatura Infantil y Juvenil de la...

A bicycle is a fun and efficient way to get from one place to another. But have you ever wondered what parts make up a bike? Some bikes have hand lever brakes while others do not. Riders with more experience usually set their seats a bit higher than those with less experience.

Did you know hot air balloons were dreamed up by a French boy in the 1700s? Joseph Montgolfier devoted his life to experiments that he hoped would allow him to fly. With the help of his little brother, his invention allowed humans to fly for the first time in history!

Do your shoes fasten with Velcro straps? Have you ever wondered where this strange invention comes from? Sometimes nature provides excellent inspiration for new solutions! Plant burs stuck in his dog's fur gave Swiss engineer George de Mestral a good idea.

Kaboom! Find out how explosions are used to demolish large buildings. Demolition experts say it's the safest way. Learn why!

Have you ever wondered how the Hoover Dam was built? Follow along as the Colorado River itself tells you its story! A lot of work went into the construction of this giant dam, but it was worth it—we now have Lake Mead and a way of converting the river’s energy into electricity!

Tugboats are tiny boats that fill a big role. Kids will discover how tugboat push and pull larger boats, like barges, through narrow waterways. Using a thick, strong rope, the tugboat guides big cargo boats through the harbor by helping to turn them.

Ever wonder why a smoke alarm goes off? A battery, siren, and metal can work together to detect smoke and sound the alarm when catching a whiff of smoke.

Follow the construction workers as they move from the ground up to build a skyscraper.