Course Catalog

Real courses across every subject and level — from Kindergarten through PhD.

Level

Subject

26 courses

+600 XP
4 lessons
Mathematics · Undergraduate 4.9

Calculus I

Limits, derivatives, and integrals — the mathematics of change, with worked intuition.

+5.4k
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+620 XP
3 lessons
Computer Science · Undergraduate 4.8

Data Science with Python

Turn raw data into insight — cleaning, exploring, and visualizing data with pandas.

+5.2k
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+700 XP
4 lessons
Computer Science · Undergraduate 4.9

Data Structures & Algorithms

Arrays, trees, hashing, and Big-O — write code that scales.

+4.9k
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+680 XP
4 lessons
Computer Science · Undergraduate 4.7

Databases & SQL

Store and query data: relational tables, keys, and writing SELECT queries in SQL.

+4.3k
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+650 XP
4 lessons
Mathematics · Undergraduate 4.8

Linear Algebra

Vectors, matrices, and linear transformations — the backbone of data science and graphics.

+4.1k
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+600 XP
3 lessons
Computer Science · Undergraduate 4.7

Cloud Computing

Servers you rent, not own — IaaS, containers, scaling, and availability in the modern cloud.

+4.1k
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+620 XP
3 lessons
Computer Science · Undergraduate 4.6

Blockchain & Crypto

Ledgers no one owns — hashes, blocks, consensus, keys, and smart contracts explained clearly.

+3.9k
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+720 XP
2 lessons
Computer Science · Undergraduate 4.8

Operating Systems

What really happens between your code and the hardware: processes, scheduling, memory, and why the illusion holds.

+3.8k
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+680 XP
3 lessons
Mathematics · Undergraduate 4.8

Discrete Mathematics

The math of computer science: logic, proofs, sets, counting, and graphs — reasoning about discrete structures.

+3.7k
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+700 XP
3 lessons
Computer Science · Undergraduate 4.7

Computer Networks

How the internet actually works: packets, addresses, routing, and the layered protocols that carry every click.

+3.6k
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+700 XP
4 lessons
Science · Undergraduate 4.5

Organic Chemistry

The chemistry of carbon: nomenclature, functional groups, and reaction mechanisms.

+3.4k
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+580 XP
3 lessons
Science · Undergraduate 4.7

Thermodynamics

Heat, work, and entropy — the laws governing energy, engines, and why time has a direction.

+3.4k
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+720 XP
2 lessons
Mathematics · Undergraduate 4.8

Differential Equations

Equations whose unknowns are functions: model growth, decay, and oscillation, and see why solutions behave as they do.

+3.2k
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+560 XP
3 lessons
History · Undergraduate 4.8

Women's History

Suffrage, work, and struggle — recovering women's roles and voices across history.

+3.2k
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+700 XP
3 lessons
Computer Science · Undergraduate 4.7

Mobile App Development

Build interactive apps: screens, state, user input, and the event loop that ties them together.

+3.1k
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+560 XP
3 lessons
Mathematics · Undergraduate 4.7

Numerical Methods

How computers solve equations they can't solve exactly — roots, integrals, and error.

+3.1k
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+560 XP
3 lessons
Arts · Undergraduate 4.7

Creative Coding

Program pictures that move and respond — generative art and interaction with p5.js.

+3.0k
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+600 XP
3 lessons
Arts · Undergraduate 4.8

Color Theory & Design

The science and craft of color: the wheel, harmony, contrast, and how composition guides the eye.

+2.8k
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+600 XP
4 lessons
English · Undergraduate 4.5

Shakespeare

Tragedy, comedy, and the sonnet — reading the bard with confidence.

+2.6k
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+600 XP
3 lessons
Science · Undergraduate 4.7

Materials Science

Why steel bends, ceramics shatter, and silicon computes — structure, properties, and design of materials.

+2.6k
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+640 XP
3 lessons
Arts · Undergraduate 4.8

Filmmaking & Video Storytelling

Tell stories with a camera: shots and coverage, exposure and light, and the edit that turns footage into film.

+2.5k
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+640 XP
3 lessons
Science · Undergraduate 4.7

Geology: The Dynamic Earth

Plate tectonics, the rock cycle, earthquakes, and deep time — how the planet builds and reshapes itself.

+2.4k
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+680 XP
3 lessons
Mathematics · Undergraduate 4.8

Number Theory

Primes, divisibility, and modular arithmetic — ancient questions about whole numbers that now secure the internet.

+2.3k
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+620 XP
3 lessons
History · Undergraduate 4.8

The Cold War

Four decades on the edge: superpower rivalry, proxy wars, the space race, and the wall that finally fell.

+2.2k
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+620 XP
3 lessons
World Languages · Undergraduate 4.7

Advanced Spanish: Grammar & Expression

Move beyond the basics: the subjunctive mood, ser vs. estar, and the register that makes speech sound native.

+2.1k
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+600 XP
4 lessons
History · Undergraduate 4.6

Modern European History

Revolutions, world wars, and the making of modern Europe.

+1.9k
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