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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.

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.

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.

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.

CK-12 Chemistry covers Matter, Atomic Structure; The Elements and Their Properties; Stoichiometry; Chemical Kinetics; Physical States of Matter; Thermodynamics; Nuclear Chemistry; and Organic Chemistry.

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.

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.

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.

CK-12 Biology I is a textbook for high school students covering cell biology, genetics, evolution, ecology, and physiology.

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.

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

CK-12 Foundation’s Basic Algebra, Volume 1 Of 2 FlexBook covers the following six chapters:Expressions, Equations, and Functions - covers the relationships among expressions, equations, and functions when variables are present. Also explore… more

CK-12’s People’s Physics Book v3 is intended to be used as one small part of a multifaceted strategy to teach physics both conceptually and mathematically. Many instructional videos are included.

CK-12’s Basic Geometry FlexBook, Volumes 1 through 2, is designed to present students with geometric principles in a more graphics-oriented course. Volume 2 includes 6 chapters: Similarity, Right Triangle Trigonometry, Circles, Perimeter a… more

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

CK-12’s Advanced Probability and Statistics-Second Edition is a clear presentation of the basic topics in statistics and probability, but finishes with the rigorous topics an advanced placement course requires. Volume 2 includes the last 7 … more

CK-12 Biology is a high school FlexBook covering cell biology, genetics, evolution, ecology, microorganisms, fungi, plants, invertebrates, vertebrates, and physiology.

CK-12 Foundation’s Math Analysis FlexBook is a rigorous text that takes students from analyzing functions to mathematical induction to an introduction to calculus.

CK-12’s Geometry - Second Edition is a clear presentation of the essentials of geometry for the high school student. Topics include: Proofs, Triangles, Quadrilaterals, Similarity, Perimeter & Area, Volume, and Transformations. Volume 1 incl… more

CK-12 Earth Science For High School 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.