The cycle of energy is important to many different systems on Earth. Scholars use questioning and observation to investigate the differences between renewable and non-renewable resources and how they relate to global changes. They...

No need to manufacture an excuse for learning about manufacturing. Scholar use an eBook to study manufacturing processes. The textbook covers milling machines, lathe machines, drill presses, bandsaws, surface grinders, heat treating,...

From the scientific method to the function of a cell, the eBook has it all. A useful resource provides a free biology textbook with a focus on context. The text begins with an overview of the process of scientific inquiry and biology...

This digital textbook covers core earth science concepts and includes interactive features, real-world examples, videos, and study guides.

Explore the concept of scientific reasoning, and compare and contrast hypothesis and theories while understanding the difference between deductive and inductive thinking.