Digital library
Textbooks, references and open learning resources.

External
Preparation for College Mathematics
Lydia de Wolf · Siena College
In the contents: 1.4 Powers and Radicals · 1.5 Estimation Common Sense and Intuition · Exponents and Radicals Drills

External
Street-Fighting Mathematics
Sanjoy Mahajan · Olin College of Engineering
In the contents: 1.04: Summary and further problems · 2.02: Plane Geometry - The Area of an Ellipse · 2.03: Solid Geometry - The Volume of a Truncated Pyramid

External
Math 400: Calculus I - Differential Calculus
Roy Simpson · Cosumnes River College
In the contents: 1.1.01: Resources and Key Concepts · 1.2.01: Resources and Key Concepts · 1.03: Limit Laws and the Squeeze Theorem

External
Math 375: Pre-Calculus
Roy Simpson, Sangchin Sertich & Paige Buck-Moyer · Cosumnes River College
In the contents: 01: Triangles and Circles · 1.01: Angles and Basic Geometry · 1.1.01: Resources and Key Concepts

External
Developmental Math (NROC)
The NROC Project · LibreTexts
In the contents: 1.1.01: Place Value and Names for Whole Numbers · 1.02: Adding and Subtracting Whole Numbers · 1.2.01: Adding Whole Numbers and Applications

External
Celestial Mechanics
Jeremy Tatum · University of Victoria
In the contents: 1.11: Fitting a Polynomial to a Set of Points - Lagrange Polynomials and Lagrange Interpolation · 03: Plane and Spherical Trigonometry · 3.03: Cylindrical and Spherical Coordinates

External
The Essence of Mathematics Through Elementary Problems
Alexandre Borovik & Tony Gardiner · University of Manchester & University of Birmingham
In the contents: 1.01: Mental Arithmetic and Algebra · 1.02: Direct and Inverse Procedures · 1.06: Trigonometry and Radians

External
MATH 1200: Calculus for Scientists I
Pamini Thangarajah · Mount Royal University
In the contents: 0.2: Analytic geometry · 0.3: Trigonometry · 0.4: Logarithms and Exponents

External
Trigonometry
Katherine Yoshiwara · Los Angeles Pierce College
In the contents: 01: Triangles and Circles · 1.00: Angles and Triangles · 1.03: Chapter 1 Summary and Review

External
TMCC: Precalculus I and II
OpenStax · LibreTexts
In the contents: Under Construction test2 01: Functions 1.1: Functions and Function Notation · Under Construction test2 01: Functions 1.2: Domain and Range · Under Construction test2 01: Functions 1.3: Rates of Change and Behavior of Graphs
External
Math 370: Precalculus
Carl Stitz & Jeff Zeager · Lakeland Community College & Lorain County Community College
In the contents: 01: Relations and Functions · 1.01: Sets of Real Numbers and the Cartesian Coordinate Plane · 02: Linear and Quadratic Functions

External
Elementary College Geometry
Henry Africk · CUNY New York City College of Technology
In the contents: 01: Lines Angles and Triangles · 2.03: The ASA and AAS Theorems · 2.04: Proving Lines and Angles Equal

External
Technical Mathematics SJDC 1
Jacquelynn Schwegel · San Joaquin Delta College
In the contents: 1.07: Evaluating Algebraic Expressions and Formulas · 2.02: Solving Equations with Addition and Subtraction Properties of Equality · 2.03: Solving Equations with the Division and Multiplication Properties of Equality

External
Technical Mathematics
James Turner · Barton Community College
In the contents: 1.02: Adding and Subtracting Whole Numbers · 1.03: Multiplication and Division of Whole Numbers · 2.05: Adding and Subtracting Fractions

External
Math 373: Trigonometry for Calculus
Roy Simpson · Cosumnes River College
In the contents: 01: Triangles and Circles · 1.01: Angles and Basic Geometry · 1.1.01: Resources and Key Concepts

External
Algebra and Trigonometry
Jay Abramson · Arizona State University
In the contents: 1.03: Exponents and Scientific Notation · 1.3E: Exponents and Scientific Notation (Exercises) · 1.04: Radicals and Rational Expressions

External
Math 100 Liberal Arts Math
Nancy Ikeda · Fullerton College
In the contents: 1.03: Temperature and Time · 1.04: Conversion Between the Metric and US Customary Systems of Measurement · 1.05: Chapter Review and Glossary

External
College Technical Math 1A (NWTC)
Rachel Johnson · Northeast Wisconsin Technical College
In the contents: 1.07: Scientific and Engineering Notation · 02: Working with and Converting Measurements · 3.02: Solving Equations with Addition and Subtraction Properties of Equality

External
Geometry with an Introduction to Cosmic Topology
Michael P. Hitchman · Linfield College
In the contents: 01: An Invitation to Geometry · 1.02: A Brief History of Geometry · 1.03: Geometry on Surfaces- A First Look
External
Math 384: Lecture Notes
Roy Simpson · Cosumnes River College
In the contents: 01: Triangles and Circles · 1.01: Angles and Basic Geometry · 1.04: Circles and Angles in the Rectangular Coordinate System