Rachel Werner

How does a search engine find just the right information? It uses a set of instructions you never see. And that wouldn't be possible without the ideas of Ada Lovelace—the first person to describe an algorithm. With historical images and key events before and after Lovelace's innovation, this book will help kids understand Lovelace's groundbreaking impact on the history of...

Today, we can talk to someone across town or even across the country right away. We just pick up the phone and call them. But it took a lot longer to get in touch with folks before Alexander Graham Bell invented the telephone. With historical images and details about key events before and after Bell's innovation, this book will help...

It is easy to get to many places around the world these days—we can just fly there. In the early 1900s, though, it was not so simple. But the Wright brothers were up to the challenge of figuring out how people could fly. With historical images and details about key events before and after the Wright brothers' innovation, this book...