bythreedu · Mathematics · 10 Tracks · 2026

Math, built
for real understanding.

Ten tracks from arithmetic foundations to differential equations. Each course is sequenced to build on the last — not just covering material, but developing the kind of mathematical thinking that transfers to every hard problem you'll encounter.

Tracks10full sequence
Format1:1live sessions
01 Full Track Sequence
01
Pre-Algebra
Number sense · Fractions · Ratios · Intro to variables
 02
Algebra
Equations · Functions · Polynomials · Systems
 03
Geometry
Proof · Congruence · Similarity · Coordinate geometry
 04
Trigonometry
Unit circle · Trig functions · Identities · Applications
 05
Precalculus
26 lessons · 8 units · ~26 weeks · Calculus I ready
→ 06
Statistics
Probability · Distributions · Inference · Regression
 07
Calculus I
Limits · Derivatives · Applications · Intro to integration
 08
Calculus II
Integration techniques · Series · Polar · Parametric
 09
Calculus III
Multivariable calculus · Vectors · Partial derivatives · Multiple integrals
 10
Differential Equations
ODEs · Systems · Laplace transforms · Applications
Note on sequence: Tracks 01–05 follow a standard pre-college progression. Statistics can be taken after Algebra. Calculus I–III and Differential Equations are college-level and build sequentially — each requires the prior track.