Hakutulokset: Hakutulos
yhteensä 43 hakutulosta
Investigating Electricity
Electricity powers lights, computers, and television sets. But have you seen how electricity can make objects stick together? Or make other objects pull apart? Now you can! Explore …
El calor (Heat)
Why do some things heat up quickly while others don’t? How can heat cause matter to change form—from solid to liquid to gas and back again? Heat cannot be seen, but it can easily …
Investigating Sound
Audisee(R) eBooks with Audio combine professional narration and text highlighting for an engaging read aloud experience! People, animals, machines, and wind all make sounds. But …
Bessie Coleman
High in the sky, Bessie Coleman could soar like a bird. She was free-at least until she landed. As a black woman in the 1920s, she wasn't allowed to learn how to fly. Forced to …
Investigating Light
The sun, lightbulbs, and flickering fires all bring light to our world. But have you ever watched light rays moving? Or seen how light rays reflect off objects? Now you can! …
Their Skeletons Speak
On July 28, 1996, two young men stumbled upon human bones in the shallow water along the shore of the Columbia River near Kennewick, Washington. Was this an unsolved murder? The …
Put Pulleys to the Test
Audisee(R) eBooks with Audio combine professional narration and text highlighting for an engaging read aloud experience! What do flagpoles and some window blinds have in common? …
Put Wheels and Axles to the Test
What do bicycles, doorknobs, and screwdrivers have in common? All of them use wheels and axles to perform work! Wheels and axles are simple machines. They help us to do jobs more …
Put Inclined Planes to the Test
What do staircases, dump truck beds, and ramps have in common? All of them are inclined planes! Inclined planes are simple machines. They help us to do jobs more easily. But don't …
Jackie Robinson
The first African American to break the color barrier in modern major league baseball, Jackie Robinson was one of the greatest players of all time. Forced to put up with angry, …
Researching Rocks
Rocks can be made of many different minerals. By looking at rocks closely, we can tell where they were formed and what conditions they were created in. How do we know these things? …
Investigating Magnetism
You know that magnets hold pictures on a refrigerator. But have you ever found a magnet's north pole? Or turned an ordinary paper clip into a magnet? Now you can! Explore magnetism …