Course Catalog

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

Level

Subject

21 courses

+180 XP
4 lessons
Mathematics · Elementary 4.9

Early Math: Counting & Addition

A friendly first course in numbers — counting, comparing, and adding small amounts with hands-on examples.

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+220 XP
3 lessons
Mathematics · Elementary 4.9

Multiplication & Division

Times tables that make sense: equal groups, arrays, and sharing fairly — the foundation for all later math.

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+210 XP
2 lessons
Mathematics · Elementary 4.9

Telling Time & Money

Read a clock and count coins with confidence: hours and minutes, dollars and cents, and making change.

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+230 XP
3 lessons
Mathematics · Elementary 4.8

Fractions & Decimals

Parts of a whole made friendly: naming fractions, comparing them, and meeting decimals for the first time.

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+300 XP
4 lessons
Mathematics · Middle School 4.7

Pre-Algebra Foundations

Bridge arithmetic and algebra: integers, fractions, ratios, and the meaning of a variable.

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+450 XP
4 lessons
Mathematics · High School 4.8

Algebra I

Linear equations, inequalities, and functions — the core algebra every high schooler needs.

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+160 XP
3 lessons
Mathematics · Elementary 4.8

Mental Math Tricks

Fast, friendly tricks for adding, doubling, and multiplying in your head — no paper needed.

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+450 XP
4 lessons
Mathematics · High School 4.6

Geometry

Reason about shape and space: angles, triangles, the Pythagorean theorem, and proof.

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+320 XP
3 lessons
Mathematics · High School 4.7

Algebra II

Quadratics, exponents, logarithms, and functions — the algebra that opens the door to calculus.

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+460 XP
3 lessons
Mathematics · High School 4.7

Statistics

Make sense of data: mean, median, and mode, plus the basics of probability and chance.

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+520 XP
3 lessons
Mathematics · High School 4.7

Trigonometry

Sine, cosine, and tangent from triangles to the unit circle — the math of angles, waves, and rotation.

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+600 XP
4 lessons
Mathematics · Undergraduate 4.9

Calculus I

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

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+340 XP
3 lessons
Mathematics · High School 4.8

Probability & Combinatorics

Counting, chance, and combinations — from coin flips to how many ways a team can line up.

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+500 XP
3 lessons
Mathematics · High School 4.6

Precalculus

Bridge algebra and calculus: functions, domain and range, and an introduction to trigonometry.

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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.

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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.

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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.

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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.

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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.

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+900 XP
3 lessons
Mathematics · Master's 4.7

Real Analysis

The rigorous foundation of calculus: sequences, limits, and epsilon-delta proof.

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+1200 XP
3 lessons
Mathematics · PhD 4.9

Algebraic Topology

Doctoral study of shape up to deformation: homotopy, the fundamental group, and homology.

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