The second volume of the Core Knowledge History of the United States ebook begins by asking young scholars to consider the impact immigration, industrialization, and urbanization had on the United States in the late 1800s. The text ends...

Take a look at an organized physics course. The 34-section electronic textbook covers material in AP® Physics 1 and 2. Teachers use the text to supplement lectures and have the class work through the labs. Each section contains...

Hate having to look in multiple sources to find information?Technical Writing contains all information in one book! The book covers everything from defining technical writing, giving examples of technical writing, and tips for creating...

Through an illustrated tutorial and some interactive practice problems, students learn about the law of reflection of light.

A series of incident rays and their corresponding reflected rays are depicted in the diagrams in this tutorial. Each ray strikes a surface with a different orientation; yet each ray reflects in accordance with the law of reflection.

Through diagrams and illustrations, students explore how images are formed through the physics law of reflection.

In this illustrated physics tutorial, students investigate the connection between light reflection and light refraction.