Digital library
Textbooks, references and open learning resources.

External
Math C280: Calculus III
Michael Everett · Coastline College
In the contents: 03: Functions of Multiple Variables and Partial Derivatives · 3.04: Partial Derivatives · 3.4E: Partial Derivatives (Exercises)

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Sound - An Interactive eBook
Kyle Forinash and Wolfgang Christian · LibreTexts
The goal was to create an engaging text that integrates the strengths of printed, static textbooks and the interactive dynamics possible with simulations to engage the student in actively learning the physics of sound. This book consists of 33 interactive simulations which require the reader to click buttons, move sliders, etc. in order to answer questions about the behavior of waves and sound in particular.

External
Biology for Non Majors I (Lumen)
LibreTexts
Biology for Non-Majors I introduces students to the basics of the scientific process, the chemical foundations of life, cell structure and function, photosynthesis, cellular respiration, genetics and inheritance, and evolution. Designed for non-life science majors, this course is the first in a two-part series that completes a survey of biological principles.

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CHM 311: Physical Chemistry I
Anderson Marsh · Lebanon Valley College
In the contents: 3.01: The Energy of a Particle in a Box is Quantized · 3.03: The Average Momentum of a Particle in a Box is Zero · 3.04: A Particle in a Three-Dimensional Box

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PGeneral Chemistry I: Atoms, Compounds, and Bulk substances
Kate Plass · Franklin & Marshall College
In the contents: 01: What do we need to know to start

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No Limits
UT Arlington · LibreTexts
In the contents: 4.05: Collaborative Student Learning- The Art of Study Groups

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Discrete Math with SageMath
Hellen Colman · City Colleges of Chicago
In the contents: 01: Getting Started · 5.05: Partial Order

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CHEM 0106: Chemistry of the Environment
LibreTexts
In the contents: 2.20: Alkaline Earth Metals · 7.06: Dalton's Law of Partial Pressures

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BIOL 342: The New Plagues - New and Ancient Infectious Diseases Threatening World Health (Hughes)
LibreTexts
In the contents: 02: Disease and Epidemiology (Part A) · 06: Immune System Part 1 (Video) · 07: Immune System Part 2 (Video)

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Reading With My Eyes Open: Embracing the Critical and the Personal in Language Pedagogy (Quist)
Gerdi Quist · University College London
In the contents: 6: Dutch Articulation · 11: Dutch Articulation · 5: Dutch Articulations

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Exploring Early Childhood
Heather Carter & Amber Tankersley · Pittsburg State University
In the contents: 4.06: Kansas Department of Health and Environment- Child Care Licensing · 16: Partnering with Families

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Biofundamentals 2e
Klymkowsky & Cooper · University of Colorado Boulder & Michigan State University
In the contents: 2.08: Mapping the history of life on earth · 2.09: Fossil evidence for the history of life on earth · 2.10: Life's impact on earth

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World History A/B
Nina Sprouse · Mizzou Academy
In the contents: 15.02: The Start of the War · 16.02: Partition of the Ottoman Empire

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Math 3A: Calculus 1
Max Sklar · Mission College
This is the first part of the three-semester calculus sequence. Topics include functions, limits, continuity, differentiation and integration, and applications for polynomial and transcendental functions.

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M273: Multivariable Calculus
Montana_State_University
In the contents: 14: Functions of Multiple Variables and Partial Derivatives · Partial Derivatives · Partial Derivatives (Exercises)

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PGCC Microbiology
Glenn F Gebler and Yuda A Anriany · Prince George's Community College
In the contents: 7.6.01: The Two Parts of Photosynthesis
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Cell Biology, Genetics, and Biochemistry for Pre-Clinical Students
Renee J. LeClair · Virginia Tech Carilion School of Medicine
Cell Biology, Genetics, and Biochemistry for Pre-Clinical Students is an undergraduate medical-level resource for foundational knowledge across the disciplines of genetics, cell biology and biochemistry. This USMLE-aligned text is designed for a first-year undergraduate medical course that is delivered typically before students start to explore systems physiology and pathophysiology.

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CHEM 210 General Chemistry I
Sol Parajon Puenzo · Cañada College
In the contents: 1.05: Energy- A Fundamental Part of Physical and Chemical Change · 2.04: The Discovery of the Subatomic Particles · 6.02: Pressure- The Result of Particle Collisions

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World Regional Geography
Caitlin Finlayson · University of Mary Washington
In the contents: 7.03: The Religious Hearths of North Africa and Southwest Asia

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Introduction to Women, Gender, and Sexuality Studies
Emily Pain · Grand Rapids Community College
In the contents: 23: Social Movements Part I · 24: Social Movements Part II · 25: Social Movements Part III