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CK-12 has developed an online system for collaborative, custom-collated, self publishable educational content that can be adapted for individualized needs in a digital-age textbook known as a FlexBook.

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21st Century Physics
Algebra I

NEW!
Algebra I Teacher's Ed...
An Introduction to Sol...
Basic Physics
Basic Physics II
CK-12 Biology I
CK-12 Biology I Teache...
CK-12 Biology I Workbo...
CK-12 Chem Labs & Demo...

NEW!
CK-12 Chemistry
CK-12 Chemistry Teache...

NEW!
CK-12 Chemistry Workbo...

NEW!
CK-12 Earth Science
CK-12 Life Science
CK-12 Life Science Tea...
Engineering: An Introd...
Geometry
Geometry Teacher's Edi...
Geometry Teacher's Edi...
Geometry Teacher's Edi...
Geometry Teacher's Edi...
Geometry Teacher's Edi...
Guide to Authoring a S...
Nanoleap Student Journ...
Nanoleap Teacher Guide
NanoSense Student Mate...
NanoSense Teacher Mate...
People's Physics Book
People's Physics Book ...
Probability and Statis...
Probability and Statis...
Probability and Statis...
Project Based Economic...
SAT Prep FlexBook (Que...

NEW!
SAT Prep FlexBook (Que...

NEW!
Single Variable Calcul...
Trigonometry
Trigonometry Teacher's...
Trigonometry Teacher's...
U.S. History Sourceboo...
U.S. History Sourceboo...
Calculus Teacher's Edi...
Calculus Teacher's Edi...
Calculus Teacher's Edi...

21st Century Physics

The 21st Century Physics FlexBook is a collaborative effort of the Secretaries of Education and Technology and the Department of Education that seeks to elevate the quality of physics instruction across the Commonwealth of Virginia.

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Algebra I

CK-12 Foundation's Algebra FlexBook is an introduction to algebraic concepts for the high school student. Topics include: Equations & Functions, Real Numbers, Equations of Lines, Solving Systems of Equations & Quadratic Equations.

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Algebra I Teacher's Edition

CK-12 Foundation's Algebra I Teacher's Edition FlexBook complements CK-12’s Algebra I book that covers Equations & Functions, Real Numbers, Equations of Lines, Solving Systems of Equations & Quadratic Equations.

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An Introduction to Solving Engineering Problems with Matlab

MATLAB is a programming language used by several computational packages known as m-file environments This text introduces freshman engineering students to problem solving using an m-file environment.

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Basic Physics

Basic Physics is intended to be used as one small part of a multifaceted strategy to teach physics conceptually and mathematically.

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Basic Physics II

Basic Physics II updates Basic Physics and is intended to be used as one small part of a multifaceted strategy to teach physics conceptually and mathematically.

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CK-12 Biology I

CK-12's Biology I is a high school book covering cell biology, genetics, evolution, ecology, and physiology.

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CK-12 Biology I Teacher's Edition (TE)

A work in progress, CK-12 Biology I Teacher's Edition complements CK-12's Biology I book covering: Introduction to Life Science; Cells; Genetics; Evolution; Ecology; and Human Biology.

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CK-12 Biology I Workbook

A work in progress, CK-12 Biology I Workbook complements its Biology I book covering: Introduction to Life Science; Cells; Genetics; Evolution; Ecology; and Human Biology.

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CK-12 Chem Labs & Demos

A work in progress, CK-12's Chemistry Labs & Demos supports its Chemistry book covering: Matter; Atomic Structure; The Elements; Stoichiometry; Chemical Kinetics; Physical States of Matter; Thermodynamics; Nuclear and Organic Chemistry.

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CK-12 Chemistry

CK-12 Chemistry is a high school book covering Matter, Atomic Structure, The Elements and Their Properties, Stoichiometry, Chemical Kinetics, Physical States of Matter, Thermodynamics, Nuclear Chemistry, and Organic Chemistry.

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CK-12 Chemistry Teacher's Resource Guide

A work in progress, CK-12 Chemistry Teacher's Resource Guide supports its Chemistry book covering: Matter; Atomic Structure; The Elements; Stoichiometry; Chemical Kinetics; Physical States of Matter; Thermodynamics; Nuclear and Organic Chemistry.

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CK-12 Chemistry Workbook

A work in progress, CK-12 Chemistry Workbook complements CK-12's Chemistry book and contains worksheets and assessment materials.

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CK-12 Earth Science

CK-12 Earth Science covers the study of Earth - its minerals and energy resources, processes inside and on its surface, its past, water, weather and climate, the environment and human actions, and astronomy.

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CK-12 Life Science

CK-12 Life Science covers seven units: Understanding Living Things; Cells: The Building Blocks of Life; Genetics and Evolution; Prokaryotes, Protists, Fungi, and Plants; The Animal Kingdom; The Human Body; and Ecology.

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CK-12 Life Science Teacher's Edition (TE)

A work in progress, CK-12's Life Science Teacher's Edition (TE) complements its Life Science book covering: Living Things; Cells; Genetics and Evolution; Prokaryotes, Protists, Fungi, and Plants; The Animal Kingdom; The Human Body; and Ecology.

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Engineering: An Introduction for High School

Introduces engineering techniques and practices to high school students. This book is designed for a broad range of student abilities and does not require significant math or science prerequisites.

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Geometry

CK-12 Foundation's Geometry FlexBook is a clear presentation of the essentials of geometry for the high school student. Topics include: Proof, Congruent Triangles, Quadrilaterals, Similarity, Perimeter & Area, Volume, and Transformations.

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Geometry Teacher's Edition - Common Errors

CK-12 Foundation's Geometry Common Errors FlexBook, a companion to CK-12 Foundation's Geometry Student Edition, provides information for teachers on how to help students overcome common errors they face when learning Geometry concepts.

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Geometry Teacher's Edition - Differentiated Instruction

CK-12 Foundation's Geometry Teacher's Edition Differentiated Instruction FlexBook provides teachers with suggestions for customizing the CK-12 Geometry Student Edition content by student level or learning modality.

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Geometry Teacher's Edition - Enrichment

CK-12 Foundation's Geometry Teacher's Edition Enrichment FlexBook provides ideas for creative activities that teachers can use to extend the concepts in CK-12's Geometry Student Edition.

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Geometry Teacher's Edition - Problem Solving

CK-12 Foundation's Geometry Teacher's Edition Problem-Solving FlexBook provides teachers with additional ideas for activities, puzzles, games and problems for extending the problem-solving strand in the CK-12 Geometry Student Edition.

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Geometry Teacher's Edition - Teaching Tips

CK-12 Foundation's Geometry Teaching Tips FlexBook provides tips and strategies for teaching CK-12 Foundation's Geometry Student Edition.

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Guide to Authoring a Science FlexBook

Guide to Authoring a Science FlexBook outlines CK-12's protocol for creation and submission of science content to CK-12.

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Nanoleap Student Journal

Nanoleap by MCREL

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Nanoleap Teacher Guide

Nanoleap from MCREL

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NanoSense Student Materials

These NanoSense Student Materials have been designed to help high school students understand science concepts that account for nanoscale phenomena, and the principles, applications, and implications of nanoscale science.

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NanoSense Teacher Materials

These NanoSense Teacher Materials been designed to help teachers help high school students understand science concepts that account for nanoscale phenomena, and the principles, applications, and implications of nanoscale science.

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People's Physics Book

The People's Physics Book is intended to be used as one small part of a multifaceted strategy to teach physics conceptually and mathematically.

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People's Physics Book Version 2

The People's Physics Book Version 2 is intended to be used as one small part of a multifaceted strategy to teach physics conceptually and mathematically.

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Probability and Statistics (Advanced Placement)

CK-12 Foundation’s Probability and Statistics (Advanced Placement) FlexBook introduces students to basic topics in statistics and probability but finishes with the rigorous topics an advanced placement course requires.

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Probability and Statistics Teacher's Edition - Enrichment

CK-12 Foundation's Probability and Statistics Teacher's Edition Enrichment FlexBook provides ideas that teachers can use to extend the concepts in CK-12's Probability and Statistics Student Edition.

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Probability and Statistics Teacher's Edition - Teaching Tips

CK-12 Foundation's Probability and Statistics Teaching Tips FlexBook provides tips and strategies for teaching CK-12 Foundation's Probability and Statistics Student Edition.

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Project Based Economics

From Buck Institute for Education, Project Based Economics - high school level – covers most of the National High School Standards for micro- and macro-economics.

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SAT Prep FlexBook (Questions and Answer Key)

A free mini-book to prepare students for the SAT exam with lessons and questions in math, reading, and writing.

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SAT Prep FlexBook (Questions with Answer Explanations)

A free mini-book to prepare students for the SAT exam with lessons and questions in math, reading, and writing.

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Single Variable Calculus

CK-12 Foundation’s Single Variable Calculus FlexBook introduces high school students to the topics covered in the Calculus AB course. Topics include: Limits, Derivatives, and Integration.

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Trigonometry

CK-12 Foundation’s Trigonometry FlexBook is an introduction to trigonometry for the high school student. Topics include: Trigonometric Identities & Equations, Circular Functions, and Polar Equations & Complex Numbers.

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Trigonometry Teacher's Edition - Common Errors

CK-12 Foundation's Trigonometry Common Errors FlexBook provides teachers with suggestions for assisting students overcome common misconceptions they face when studying introductory Trigonometry.

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Trigonometry Teacher's Edition - Teaching Tips

CK-12 Foundation's Trigonometry Teaching Tips FlexBook provides tips and strategies for teaching CK-12 Foundation's Trigonometry Student Edition.

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U.S. History Sourcebook - Advanced

From CK-12, U.S. History Sourcebook - Advanced covers U.S. history from Colonial America through World War I.

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U.S. History Sourcebook - Basic

From CK-12, U.S. History Sourcebook - Basic covers U.S. history from Colonial America through World War I.

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Calculus Teacher's Edition - Teaching Tips

CK-12 Foundation's Calculus Teaching Tips FlexBook provides tips and strategies for teaching CK-12 Foundation's Calculus Student Edition.

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Calculus Teacher's Edition - Common Errors

CK-12 Foundation's Calculus Common Errors FlexBook provides information for teachers on how to help students overcome common errors they face when learning Calculus concepts.

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Calculus Teacher's Edition - Problem Solving

CK-12 Foundation's Calculus Teacher's Edition Problem-Solving FlexBook provides teachers with additional ideas for extending the problem-solving strand in the CK-12 Calculus Student Edition.

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Science Technology Engineering Mathematics

Popular Categories

Advanced Geometry
Behavior of Gases
Elements and the Periodic Table
Genetics
Human Biology
Life Science
Limits
Living Systems
Mathematics
Optics
Physical Science
Trigonometry

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Traditional textbooks are expensive, rigid, and heavy. No updating. No customizing. Enter the FlexBook, a digital-age textbook. Free, customizable, and standards aligned. The future is now. Welcome to CK-12.

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How to Create a FlexBook

21st Century Physics

Algebra I

Algebra I Teacher's Edition

An Introduction to Solving Engineering Problems with Matlab

Basic Physics

Basic Physics II

CK-12 Biology I

CK-12 Biology I Teacher's Edition (TE)

CK-12 Biology I Workbook

CK-12 Chem Labs & Demos

CK-12 Chemistry

CK-12 Chemistry Teacher's Resource Guide

CK-12 Chemistry Workbook

CK-12 Earth Science

CK-12 Life Science

CK-12 Life Science Teacher's Edition (TE)

Engineering: An Introduction for High School

Geometry

Geometry Teacher's Edition - Common Errors

Geometry Teacher's Edition - Differentiated Instruction

Geometry Teacher's Edition - Enrichment

Geometry Teacher's Edition - Problem Solving

Geometry Teacher's Edition - Teaching Tips

Guide to Authoring a Science FlexBook

Nanoleap Student Journal

Nanoleap Teacher Guide

NanoSense Student Materials

NanoSense Teacher Materials

People's Physics Book

People's Physics Book Version 2

Probability and Statistics (Advanced Placement)

Probability and Statistics Teacher's Edition - Enrichment

Probability and Statistics Teacher's Edition - Teaching Tips

Project Based Economics

SAT Prep FlexBook (Questions and Answer Key)

SAT Prep FlexBook (Questions with Answer Explanations)

Single Variable Calculus

Trigonometry

Trigonometry Teacher's Edition - Common Errors

Trigonometry Teacher's Edition - Teaching Tips

U.S. History Sourcebook - Advanced

U.S. History Sourcebook - Basic

Calculus Teacher's Edition - Teaching Tips

Calculus Teacher's Edition - Common Errors

Calculus Teacher's Edition - Problem Solving