Learn all of maths, in order.

From counting to the open problems. Pick where you are; every lesson shows its steps, draws the picture, and hides the answer until you ask.

  1. 1 Arithmetic 4 lecciones
  2. 2 Algebra 11 lecciones
  3. 3 Geometry 6 lecciones
  4. 4 Trigonometry 4 lecciones
  5. 5 Precalculus 7 lecciones
  6. 6 Calculus 7 lecciones
  7. 7 Linear Algebra 5 lecciones
  8. 8 Statistics & Probability 15 lecciones
  9. 9 Discrete Math & Logic 2 lecciones
  10. 10 Number Theory 7 lecciones
  11. 11 Differential Equations 5 lecciones
  12. 12 Analysis 5 lecciones
  13. 13 Frontiers 6 lecciones

Or bring your own problem

Type it, or draw it with your mouse or finger. Equations, derivatives, matrices, triangles, primes — or a word problem the tutor breaks into parts.

What each stage covers

Cada uno es un conjunto de lecciones con un ejemplo en vivo, un visual, y un solucionador sintonizado para ello.

Stage 1 Arithmetic Numbers, fractions, percentages and the order of operations. Stage 2 Algebra Equations, inequalities, factoring, functions and systems. Stage 3 Geometry Triangles, circles, polygons, solids and coordinates. Stage 4 Trigonometry Angles, the unit circle, identities and trig equations. Stage 5 Precalculus Functions in depth, complex numbers, sequences, conics and vectors. Stage 6 Calculus Limits, derivatives, integrals, series and optimisation. Stage 7 Linear Algebra Matrices, determinants, inverses, row reduction and eigenvalues. Stage 8 Statistics & Probability Averages, spread, counting and probability. Stage 9 Discrete Math & Logic Counting, logic, truth tables, sets and proof. Stage 10 Number Theory Primes, divisibility, gcd, modular arithmetic and sequences. Stage 11 Differential Equations Equations whose unknown is a function: growth, oscillation, and how physics is written. Stage 12 Analysis Limits made rigorous: sequences, series, convergence, improper integrals, complex numbers as functions. Stage 13 Frontiers The open problems — Riemann, Navier–Stokes, P vs NP — broken into what you need to even read them.

Cómo funciona

1

Type it or draw it

“derivative of x² sin x”, “is 561 prime”, “triangle 3 4 5” — or sketch the equation on the pad and it is read for you.

2

Mira cada movimiento

Una regla por paso — la regla del producto, una operación de fila, una división de Euclides — animada y explicada en una oración.

3

Mira su forma.

Curvas con sus raíces marcadas, superficies que se pueden girar, triángulos dibujados a escala, árboles de factor, matrices como vectores en el espacio.

4

Los imposibles también

Un problema de palabras, una prueba, una pregunta abierta: el tutor lo rompe en partes que se pueden atacar, le dice lo que se sabe, y oculta la solución hasta que lo desee.