For a semester-length course, all seven chapters can be covered. For a shorter course, the book is designed so that chapters 1, 2, and 5 are the only ones that are required for continuity; any of the others can be included or omitted at the instructor’s discretion, with the only constraint being that chapter 6 requires chapter 4.

This open-source book by Crowell, Robbin, and Angenent is a spin-off of a previous open-source book by Robbin and Angenent. It covers the first semester of a freshman calculus course.

This is a textbook on general relativity for upper-division undergraduates majoring in physics, at roughly the same level as Rindler's Essential Relativity or Hartle's Gravity. The book is meant to be especially well adapted for self-study, and answers are given in the back of the book for almost all the problems. The ratio of conceptual to mathematical problems is higher than in most books. The focus is on "index-gymnastics" techniques, to the exclusion of index-free notation. Knowledge of first-year calculus and lower-division mechanics and electromagnetism is assumed. Special relativity is introduced from scratch, but it will be very helpful to have a thorough previous knowledge of SR, at the level of a book such as Taylor and Wheeler's Spacetime Physics or my own text Special Relativity.

Liberté, by Gretchen Angelo, is a first-year college French textbook with a true communicative approach. It has been adopted by instructors at over thirty colleges and high schools (partial list below). The textbook may be downloaded for free in accordance with the license, or printed copies can be ordered. Please contact me for information on printed copies or requests for audio. Note that audio is available only to institutions adopting the text; I am sorry, but I do not currently supply them to homeschoolers or individual learners, as I simply get too many requests and cannot answer them all.

This French book is aimed at a first-year college student. Its features include:

1) Each chapter is built around communicative strategies. Clearly defined objectives in communication, culture, and grammar are given at the start of each chapter, and summary exercises at the end allow students to measure their mastery of these objectives.
2) The exercises in the in-class (A) sections are composed mainly of guided practice and extension activities, along with occasional comprehension checks and comprehensible input. Some further activities are indicated in the instructor's marginal notes. The teacher can provide teacher- directed “setting-the-stage” activities, comprehension checks, and further comprehensible input before beginning each section. Many models are provided to the students to give them a secure context in which to practice their vocabulary before they are asked to produce independent language.
3) The grammar included is explained in a more narrative form and in more detail than is typical for first-year textbooks. The grammar (B) sections should be read by the students outside of class before the communicative activities requiring those grammar points are done in class. By providing more explicit grammatical detail than is usual in a first-year book, the author hopes to stimulate students to reflect on the grammar of their own language as well as of French, helping students to become aware that their study of French is not just about mastery of a new language and culture, but about a more critical view of their own.
4) The amount of grammar is less than is typically contained in a first-year text. The grammar included has been chosen to meet the needs of the communicative goals of each chapter, and these have been selected based on what a student ranking intermediate-low to -mid on the ACTFL oral proficiency scale should be able to accomplish. The grammatical concepts included in this book focus on those that will be needed for the sentences and questions that a typical low-intermediate speaker can form, and those are emphasized repeatedly.
5) The book implicitly and explicitly recycles material from previous chapters on a regular basis, so that students can see their learning as a continual progression rather than as a rush from one grammar point to the next.
6) The book is ideally used in a classroom with internet and projection capabilities; the PDF version of the book contains hyperlinks to video and audio-based activities as well as navigational links to referenced exercises within the text itself.

PDF textbook and textbook reviews also available here: https://open.umn.edu/opentextbooks/textbooks/liberte

This is an introductory text intended for a one-year introductory course of the type typically taken by biology majors, or for AP Physics 1 and 2. Algebra and trig are used, and there are optional calculus-based sections. My text for physical science and engineering majors is Simple Nature.

This is an introductory text intended for a one-year introductory course of the type typically taken by biology majors, or for AP Physics 1 and 2. Algebra and trig are used, and there are optional calculus-based sections. My text for physical science and engineering majors is Simple Nature.

Table of Contents
0 Introduction and review
1 Scaling and estimation
2 Velocity and relative motion
3 Acceleration and free fall
4 Force and motion
5 Analysis of forces
6 Newton's laws in three dimensions
7 Vectors
8 Vectors and motion
9 Circular motion
10 Gravity
11 Conservation of energy
12 Simplifying the energy zoo
13 Work: the transfer of mechanical energy
14 Conservation of momentum
15 Conservation of angular momentum
16 Thermodynamics
17 Vibrations
18 Resonance
19 Free waves
20 Bounded waves
21 Electricity and circuits
22 The nonmechanical universe
23 Relativity and magnetism
24 Electromagnetism
25 Capacitance and inductance
26 The atom and E=mc$^2$
27 General relativity
28 The ray model of light
29 Images by reflection
30 Images, quantitatively
31 Refraction
32 Wave optics
33 Rules of randomness
34 Light as a particle
35 Matter as a wave
36 The atom

This is a calculus-based book meant for the first semester of the type of freshman survey course taken by engineering and physical science majors. A treatment of relativity is interspersed with the Newtonian mechanics, in optional sections. The book is designed so that it can be used as a drop-in replacement for the corresponding part of Simple Nature, for instructors who prefer a traditional order of topics. Simple Nature does energy before force, while Mechanics does force before energy. Simple Nature has its treatment of relativity all in a single chapter, rather than in parallel with the development of Newtonian mechanics.

This is a set of lecture notes for my course Relativity for Poets at Fullerton College. It's a nonmathematical presentation of Einstein's theories of special and general relativity, including a brief treatment of cosmology.

This is 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. For instructors who prefer the traditional sequence, there is a drop-in replacement for ch. 0-4, Mechanics, that covers force before energy. My text for the type of course usually taken by biology majors is Light and Matter.

This a textbook on special relativity, aimed at undergraduates who have already completed a freshman survey course. The treatment of electromagnetism assumes previous exposure to Maxwell's equations in integral form, but no knowledge of vector calculus.