Dana Meachen Rau
Author
Series
Publisher
Children's Press
Pub. Date
[2012]
Language
English
Description
The world is filled with machines that make our lives easier. Many of these machines are run by electricity, but you also can use your own power to run machines as well. You power your bicycle you open a door you move a box. Simple machines are devices with very few parts that help us move objects. Learn about the basic simple machines that we use every day.
Author
Series
Publisher
Children's Press
Pub. Date
2013.
Language
English
Description
In 1992, Dr. Mae Jemison made history by spending eight days in Earth's orbit, making her the first black woman ever to visit space. Twenty years later, Dr. Jemison is pushing space travel forward again with her 100 Year Starship Foundation. In this new True Book series, readers will join Dr. Jemison as she guides them on a tour of our solar system and explains how astronomers have used technology to discover new stars and planets.
"This book explains...
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