検索キーワード： 物事の仕組み

Hot air balloons are huge and colorful. They're lots of fun to watch. But how do they fly? And how do people control where the hot air balloon goes? Listen to this audiobook to find out!

Helicopters can take off from almost anywhere and change directions quickly. They can even hover. But how do they stay in the air? And how do pilots control these special aircraft? Listen to this book to find out!

Would you want to swoop through the air like a bird? Riding a hang glider is a fun way to fly. But a hang glider has no motor. How does the pilot take off? How does the hang glider stay in the air? Learn the answers in this audiobook!

Carefully leveled text engages young listeners in learning about how construction workers help their community. Age-appropriate critical thinking questions and a glossary help build nonfiction learning skills.

Books are one of humankind's greatest forms of expression, and now Book, in a witty, idiosyncratic voice, tells us the inside story. A wonderfully eccentric character with strong opinions and a poetic turn of phrase, Book tells of a journey from papyrus scrolls to medieval manuscripts to printed paper and beyond - pondering, along the way, many bookish things, including the evolution of the alphabet, the library (known to Egyptians as "the healing place of the soul"), and even book burning.

How does a tadpole become a frog? Follow each step in nature's cycle - from egg to adulthood - in this fascinating book!

How does an apple tree produce a tasty fruit? Follow each step in nature's cycle - from starting a new tree to eating a juicy apple - in this fascinating book!

How does a corn seed become corn on the cob? Follow each step in nature's cycle - from planting to picking and eating - in this fascinating book!

How does a foal grow into a horse? Follow each step in nature's cycle - from birth to stallion or mare - in this fascinating book!

How is honey made from a flower? Follow each step in nature's cycle - from pretty bloom to tasty treat - in this fascinating book!

How does an egg become a butterfly? Follow each step in nature's cycle - from egg to brightly colored insect - in this fascinating book!

How does wheat turn into bread? Follow each step in the food production cycle - from planting wheat seeds to eating toast with jelly - in this fascinating book!

How does a peanut turn into peanut butter? Follow each step in the food production cycle - from planting peanut seeds to spreading peanut butter on bread - in this fascinating audiobook!

How does milk turn into frosty ice cream? Follow each step in the food production cycle - from milking a cow to eating a frozen treat - in this fascinating book!

How do trees make sweet maple syrup? Follow each step in the food production cycle - from planting sugar maple trees to pouring syrup on pancakes - in this fascinating book!

How does grass help cows make yummy milk? Follow each step in the food production cycle - from cows eating grass to ice-cold milk - in this fascinating book!

How does a cocoa bean turn into tasty chocolate? Follow each step in the food production cycle - from planting cocoa trees to eating a sweet treat - in this fascinating book!

From the stethoscope to the clinical trial, this exploration of scientific inquiry celebrates the greatest inventions in medicine. Get to know the physicians, scientists, and other researchers responsible for these breakthroughs in medicine, and explore the ups, the downs, and the eureka moments that are science in action.

From the first immunosuppressant drugs to the first successful heart transplant, this exploration of scientific inquiry celebrates the greatest developments to date in transplant medicine. Get to know the physicians, scientists, and other researchers responsible for these breakthroughs in medicine.

Machines can make our life easier. A simple machine is something that can change the direction or strength of a force. All complicated machines are made of one or more simple machines. Simple machines can reduce the effort needed for you to run them. See if you can find the simple machines around you.