Math Courses: Algebra, Geometry, Trigonometry and Calculus
Free-to-start math lessons for high school and college: Algebra, Geometry, Trig, Precalculus, AP Calculus, Statistics and Linear Algebra.
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Every course follows the order your class does. Each topic has a plain-language explanation, worked examples you can follow step by step, the mistakes students most often make, and practice problems. If you get stuck, the AI tutor explains the step you missed instead of just showing the answer.
Not sure where to start? If you're in Algebra 1 or Geometry, begin with linear equations. If you're preparing for an AP exam, go straight to AP Calculus AB & BC.
High school math
Core courses from Algebra 1 through Precalculus.
Algebra
Linear equations, inequalities, functions, systems and quadratics.
Algebra 1
The full Algebra 1 course, from variables to systems of equations.
Algebra 2
Polynomials, exponentials, logarithms and advanced functions.
Geometry
Proofs, triangles, circles, area, volume and transformations.
Trigonometry
Trig ratios, the unit circle, identities and trig equations.
Precalculus
Functions, trig and limits: everything you need before calculus.
AP and college math
Calculus, statistics and beyond.
Popular lessons
Start with the topics students search for most.
Free worksheets and practice
Printable, with answer keys. No sign-up needed.
AP Calculus Formula Sheet
Every AB and BC formula on one printable page.
Derivative Practice Problems
30 problems with answers, power rule to implicit differentiation.
Two-Step Equations Worksheet
One-step, two-step and multi-step equations with answers.
Linear Equations Worksheet
Slope, writing equations and converting forms.
Graphing Linear Equations Worksheet
Graph lines in every form, answer key with graphs.
Systems of Equations Worksheet
Graphing, substitution, elimination and word problems.
Solving Inequalities Worksheet
Inequalities with number-line answers.
Quadratic Equations Worksheet
Factoring, completing the square, the quadratic formula.
Learn math the way your class teaches it.
Worked examples, practice and an AI tutor that explains every step.
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