Meets standard scope and sequence requirements for a two-semester introductory algebra-based physics course. The text is grounded in real-world examples to help students grasp fundamental physics concepts.

A calculus-based physics textbook meant for the type of freshman survey course taken by engineering and physical science majors, or for AP Physics C. It uses a nontraditional order of topics, with energy coming before force.

An entertaining and free e-book on physics – the science of motion. Comes in 6 volumes: 1) Fall, Flow and Heat; 2) relativity and Cosmology; 3) Light, Charges, and Brains; 4) the Quantum of Change; 5) Pleasure, Technology,and Stars; 6) The Strand Model-A Speculation on Unification.

A comprehensive introductory text on the physical aspects of geology, including rocks and minerals, plate tectonics, earthquakes, volcanoes, glaciation, groundwater, streams, coasts, mass wasting, climate change, planetary geology and much more.

An online course in geology taught using a mastery approach.

This book explains how it is even possible to reconstruct the history of the earth from data that is available in the present. Emphasis of the book is methodological and explains how it is known rather than what is known.

This textbook is a comprehensive lab manual for the core curriculum Introductory Geosciences classes with both informational content and laboratory exercises. Topics include basic laws and theories in Geology, the Earth's interior and plate tectonics, water and climate change, igneous rocks and volcanoes, and earthquakes.

An introduction to the nature of the universe. Use it to research or review our solar system, stars, galaxies, and the history of the universe. Each chapter has a set of corresponding homework questions.

An introductory book on astronomy. Still in draft form and final book version coming soon.