Browse All Subject Categories

Algebra

Equations, expressions, polynomials, and algebraic functions.

Calculus

Limits, derivatives, integrals, and differential equations.

Geometry

Shapes, angles, areas, volumes, and geometric proofs.

Trigonometry

Sine, cosine, tangent, and trigonometric functions.

Statistics

Probability, data analysis, statistical tests, and distributions.

Number Theory

Prime numbers, divisibility, modular arithmetic, and number properties.

Discrete Mathematics

Combinatorics, graph theory, logic, and set theory.

Linear Algebra

Matrices, vector spaces, linear transformations, and eigenvalues.

Differential Equations

Ordinary and partial differential equations, systems, and applications.

Topology

Point-set topology, algebraic topology, and topological spaces.

Mathematical Logic

Propositional logic, first-order logic, proof theory, and model theory.

Physics

Mechanics, electricity, magnetism, and modern physics.

Chemistry

Chemical reactions, organic chemistry, and molecular structures.

Biology

Cell biology, genetics, ecology, and human anatomy.

Astronomy

Solar system, stars, galaxies, and cosmology.

Earth Science

Geology, meteorology, oceanography, and environmental science.

Biochemistry

Biological molecules, metabolic pathways, and enzyme kinetics.

Quantum Physics

Wave-particle duality, quantum mechanics, and subatomic phenomena.

Microbiology

Bacteria, viruses, fungi, and microbial processes.

Genetics

Gene expression, inheritance patterns, and genetic analysis.

Astrophysics

Study of celestial objects and physical processes in space.

Thermodynamics

Energy transfer, heat, work, and thermodynamic systems.

Organic Chemistry

Carbon compounds, functional groups, and reaction mechanisms.

Grammar & Syntax

Punctuation, sentence structure, and grammar rules.

Literature Analysis

Understanding themes, characters, and literary devices in texts.

Essay Writing

Thesis development, structure, and argumentation.

Vocabulary

Word meanings, usage, and building your vocabulary.

Creative Writing

Fiction, poetry, narrative development, and creative expression.

Poetry Analysis

Interpreting poetry, understanding meter, rhyme, and poetic devices.

Rhetoric & Persuasion

Persuasive techniques, rhetorical analysis, and effective argumentation.

Literary Analysis

Analyzing themes, character development, plot structure, and symbolism in literature.

Technical Writing

Clear, concise writing for instructions, reports, and documentation.

Language Acquisition

Understanding how language is learned and techniques for improving fluency.

Linguistic Theory

Phonetics, syntax, semantics, and the study of language structure.

World History

Global historical events, civilizations, and trends.

U.S. History

American history from colonial times to the present.

Ancient History

Early civilizations, classical antiquity, and ancient cultures.

Medieval History

Middle Ages, feudalism, and medieval societies.

Modern History

Industrial revolution, world wars, and contemporary events.

Art History

Historical art movements, artists, and artistic developments.

Military History

Wars, military strategies, weapons development, and armed conflicts.

Economic History

Historical economic systems, trade, and financial developments.

Intellectual History

History of ideas, philosophical movements, and intellectual developments.

Social History

Historical social structures, everyday life, and cultural practices.

Political History

History of political systems, governance, and power structures.

Archaeological History

Study of human history through the recovery and analysis of material culture.

Web Development

HTML, CSS, JavaScript, and web frameworks.

Python

Python syntax, libraries, and applications.

Java

Java programming, object-oriented concepts, and Java libraries.

Data Structures & Algorithms

Arrays, linked lists, trees, sorting, and algorithm analysis.

Database & SQL

Database design, SQL queries, and database management.

Mobile Development

iOS, Android, React Native, and Flutter development.

Machine Learning

Algorithms, neural networks, and ML frameworks.

DevOps & Cloud

CI/CD, containerization, and cloud services.

Cybersecurity

Network security, encryption, and protecting digital assets.

Game Development

Game engines, mechanics, and interactive media design.

Blockchain Development

Smart contracts, decentralized applications, and distributed ledgers.

Internet of Things

Connected devices, embedded systems, and IoT protocols.

Functional Programming

Pure functions, immutability, and functional programming paradigms.

Spanish

Spanish vocabulary, grammar, and conversation.

French

French vocabulary, grammar, and conversation.

German

German vocabulary, grammar, and conversation.

Chinese

Chinese characters, pronunciation, and grammar.

Japanese

Japanese writing, vocabulary, and grammar.

Korean

Korean alphabet, vocabulary, and grammar.

Italian

Italian vocabulary, grammar, and conversation.

Russian

Russian alphabet, vocabulary, and grammar.

Finance

Financial analysis, investment strategies, and corporate finance.

Marketing

Marketing strategies, branding, consumer behavior, and market research.

Management

Leadership, organizational behavior, and business operations.

Accounting

Financial statements, accounting principles, and auditing.

Economics

Microeconomics, macroeconomics, and economic policy.

Entrepreneurship

Business planning, startups, and innovation strategies.

Philosophy

Philosophical theories, ethics, metaphysics, and logic.

Art Theory

Art movements, aesthetics, and artistic analysis.

Music Theory

Harmony, composition, notation, and musical analysis.

Film Studies

Film analysis, cinematic techniques, and film history.

Religious Studies

World religions, religious texts, and theological concepts.

Psychology

Human behavior, mental processes, and psychological theories.

Sociology

Social structures, institutions, and group behaviors.

Anthropology

Human societies, cultures, and evolutionary development.

Political Science

Political systems, governance, and international relations.

Communication Studies

Media analysis, rhetoric, and communication theories.

Anatomy & Physiology

Body systems, organ functions, and physiological processes.

Nutrition

Dietary science, nutrients, and metabolism.

Pharmacology

Drug actions, interactions, and pharmaceutical science.

Public Health

Epidemiology, health policy, and community health.

Mechanical Engineering

Mechanics, thermodynamics, and machine design.

Electrical Engineering

Circuits, electronics, and electrical systems.

Civil Engineering

Structural design, materials, and construction.

Chemical Engineering

Chemical processes, reactions, and plant design.

Software Engineering

Software design, architecture, and development processes.

SAT Prep

Math, reading, writing, and test strategies for the SAT.

ACT Prep

English, math, reading, science, and writing for the ACT.

GRE Prep

Verbal, quantitative, and analytical writing for the GRE.

GMAT Prep

Quantitative, verbal, integrated reasoning, and analytical writing.

MCAT Prep

Biology, chemistry, physics, psychology, and critical analysis.