Study Guide Library

These CK-12 study guides are written by fellow high school students. If you are having problems with Algebra I, Geometry, Probability and Statistics, Biology, Chemistry, or Physics, these study guides are for you. Be sure to keep an eye out for the wizard iconHelp for helpful tips and advice.

 

Algebra I Study Guides
Real Numbers

Basics of Real Numbers

Number Lines

Working with Real Numbers

Linear Equations and Inequalities

Linear Equations

Linear Inequalities

Compound Inequalities

Absolute Value Equations and Inequalities

Linear Graphs and Functions

Representing Functions

Graphing Linear Equations

Determining the Equation of a Line

Linear Systems of Equations and Inequalities

Linear Systems: Solve by Graphing and Substitution

Linear Systems: Solve by Elimination

Systems of Linear Inequalities

Polynomials and Factoring

Properties of Exponents

Operations with Polynomials

Factoring Polynomials

Quadratic Equations and Functions

Graphing Quadratic Equations

Solving Quadratic Equations

Exponential Functions

Irrational Numbers and Radicals

Geometric Sequences and Exponential Functions

Rational Expressions

Graphs of Rational Functions

Solving Rational Equations

Geometry Study Guides
Fundamentals

Basics of Geometry

Segments

Angles

Reasoning and Proof

Types of Reasoning

Conditional Statements

Proofs

Parallel and Perpendicular Lines

Lines and Angles

Angles and Transversals

Lines in the Coordinate Plane

Triangles

Triangle Relationships

Triangle Congruence

Bisectors, Medians, Altitudes

Inequalities in Triangles

Polygons and Quadrilaterals

Polygons

Parallelograms

Trapezoids and Kites

Similarity

Ratios and Proportions

Polygon Similarity

Proportionality Relationships

Self-Similarity

Right Triangle Trigonometry

Pythagorean Theorem

Right Triangle Similarity

Trigonometric Ratios

Special Right Triangles

Circles

Properties of a Circle

Arcs and Angles

Inscribed in Circles

Circles: Segments and Lengths

2D Measurements

Perimeter and Area

Triangles and Quadrilaterals

Circumference and Arc Length

3D Measurements

Polyhedra

Representing Solids

Surface Area and Volume

Prisms and Cylinders

Pyramids and Cones

Spheres

Transformational Geometry

Types of Transformations

Composition of Transformations

Symmetry and Tesselations

Probability Study Guides
Sampling and Data

Sampling

Describing Data

Presenting Univariate Data

Descriptive Statistics

Probability

Discrete Probability Distribution

Binomial Probability Distribution

Poisson and Geometric Probability Distributions

Normal Distribution

Inferential Statistics

Sampling Distribution and Estimation

t-Distribution

Tests of Significance

Bivariate Data

Chi-Square

Biology Study Guides
Fundamentals

Basics of Science

Basics of Biology

Organic Compounds

Cells

Cells and Cell Structure

Cell Transport and Homeostasis

Energy

Photosynthesis

Cellular Respiration

Cell Division and Cell Cycle

Reproduction and Meiosis

Genetics

Gregor Mendel

Mendelian Inheritance

Human Chromosomes and Genes

Human Inheritance

Biotechnology

Molecular Biology

DNA Replication

Protein Synthesis

Mutation

Regulation of Gene Expression

Evolution

Earth Forms and Life Begins

Evolution of Multicellular Life

Classifying Organisms

Theory of Evolution

Microevolution

Macroevolution

Ecology

Science of Ecology

Recycling Matter

Biomes

Community Ecology

Population

Human Population

Biodiversity Crisis

Natural Resources

Prokaryotes and Viruses

Prokaryotes

Viruses

Protists and Fungi

Protists

Fungi

Plants

Plant Kingdom

Modern Plants

Plant Tissues and Organs

Plant Life Cycles

Plant Adaptations and Responses

Animals

Animals: Overview

Animals: Behavior

Invertebrates

Invertebrates: Overview

Invertebrates: Species

Vertebrates

Fish

Amphibians

Reptiles

Birds

Mammals

Mammalian Reproduction

Mammals: Evolution and Classification

Physiology

Human Body: Organization

Skeletal System

Muscular System

Nervous System

Endocrine System

Circulatory System

Respiratory System

Digestive System

Excretory System

Immune System Part I

Immune System Part II

Environment and Health

Male Reproductive System

Female Reproductive System

Fertilization to Old Age

Sexually Transmitted Infections

Chemistry Study Guides
Fundamentals

Math in Chemistry

Matter

Atoms

Atomic Structure and Properties

Development of Atomic Theory

Quantum Mechanics

Quantum Mechanical Model

Wave-Particle Duality

Electron Configuration

Periodic Table

Classifying Elements

Periodic Table: Quantum Numbers

Atomic Trends

Chemical Bonds

Types of Chemical Bonds

Chemical Nomenclature

Lewis Structure

VSEPR Theory and Hybridization

States of Matter

Intermolecular Forces

Phase Diagrams

Gases

Chemical Reactions

Types of Chemical Reactions

Stoichiometry

Thermochemistry

Reaction Rate

Equilibrium

Solutions

Solutions

Acids and Bases

Special Topics

Electrochemistry

Organic Chemistry

Biochemistry

Nuclear Chemistry

Physics Study Guides
Mechanics

Motion

Newton’s Laws

Energy

Momentum

Circular motion

Gravitation

Harmonic Motion

Relativity

Matter and Its Behavior

Waves

Thermal Properties

Fluids

Atomic Structure

Nuclear Physics

Electricity and Magnetism

Electrostatics

Electrical Systems

Magnetism

Light and Optics

Geometric Optics

Wave Optics