How do we interact with Earth? Scholars learn about the sun, Earth, moon, forces, gravity, and heat sources by reading a text and performing hands-on demonstrations. They also differentiate between living and non-living things using...

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...

Textbooks come in all shapes, sizes, and media these days. An electronic textbook resource offers Physics materials for an entire course. The text offers an explanation of physics topics as well as examples of calculations and reading...

Learn about light switches and how to save electricity when they are turned off. Book includes audio narration in nine additional languages with text in English.

The animation portrays a medium as a series of particles connected by springs. In this type of longitudinal wave the particles of the medium vibrate in a direction parallel to the direction of energy transport.

Students will focus on the interaction of sunlight with atmospheric particles to produce blue skies and red sunsets.

Demonstrates how principles of kinetic energy, potential energy and energy conservation can be used to determine the speed of a descending object if given its initial height. Further discussion of other topics such as heat and...

This customizable digital textbook covers topics related to fourth-grade science. It is Next Generation Science Standards (NGSS) aligned.

A comprehensive delve into the many facets of photosynthesis. Text is supplemented with effective pictures and graphs. Review questions can be found at the end of the site.

This chemistry e-textbook provides students with AP-level reading and practice material on atomic structure and periodicity.

This digital textbook covers core physical science concepts and includes interactive features, real world examples, and videos.