A Concise Introduction to Logic
“A Concise Introduction to Logic is an introduction to formal logic suitable for undergraduates taking a general education course in logic or critical thinking, and is accessible and useful to any interested in gaining a basic understanding of logic.”
Critical Thinking: Primary Concepts
“This short, free, Creative Commons–licensed text” by James DiGiovanna of John Jay College is “useful for a brief (maybe 3 week?) critical thinking section in any intro philosophy or composition course.”
Ethics: an Online Textbook
This online text is by Stephen O’ Sullivan of Suffolk County Community College and Philip A. Pecorino of Queensborough Community College.
forallX: an Introduction to Formal Logic
By P.D. Magnus, professor and department chair in Philosophy at the University at Albany, this book “covers translation, formal semantics, and proof theory for both sentential logic and quantified logic.”
Form and Content: An Introduction to Formal Logic (Connecticut College)
“Derek Turner, Professor of Philosophy, has written an introductory logic textbook that students […] can access for free. The book differs from other standard logic textbooks in its reliance on fun, low-stakes examples involving dinosaurs, a dog and his friends, etc.”
Fundamental Methods of Logic (University of Wisconsin – Milwaukee)
By Matthew Knachel, “Fundamental Methods of Logic is suitable for a one-semester introduction to logic/critical reasoning course.”
Plato’s Republic: An Introduction
“This book is a lucid and accessible companion to Plato’s Republic, throwing light upon the text’s arguments and main themes, placing them in the wider context of the text’s structure.”
Introduction to Philosophy
“This high discussion online course confronts the big questions human beings have struggled with for millennia, and engages in dialog with some of the world’s greatest thinkers and seekers. When you are done with the course you will be familiar with the terminology, chronology and conceptual language of some of the great philosophical traditions and will be able to knowledgeably discuss the ideas introduced by Plato, the British empiricists, Arthur Schopenhauer and others.” Click “Browse” to access course modules and resources.
Open Philosophy Courses (Open Yale)
This set of Open Yale Courses includes courses on Philosophy and the Science of Human Nature and Death.