Divide And Conquer Math
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Divide And Conquer Math
No textbook needed

General classes

Complete courses in the order the math builds best. Start today with nothing but a subject. And if a textbook enters your life later, line up to it then →

Statistics

2 classes
Free OpenStax Virtual Statistics Course
Lecture videos covering the notes you'd get in class, plus Excel labs to work alongside them.
Free OpenStax In-Person Statistics Course
PowerPoint slides and Excel labs to do in class, plus videos that re-explain each lab.

Calculus

4 classes
Calculus I by Topic
Limits, derivatives, applications of derivatives, and integration.
Calculus II by Topic
Integration techniques, differential equations, series, and polar coordinates.
Calculus III by Topic
Vectors, partial derivatives, multiple integrals, and vector calculus.
Calculus I–III by Topic
All three semesters, from limits through vector calculus.

Precalculus and Trigonometry

3 classes
Precalculus by Topic
Functions through series, plus counting and probability. Trig has its own index.
Trigonometry by Topic
Right triangles, the unit circle, identities, inverses, and polar coordinates.
Precalculus with Trigonometry by Topic
Precalculus and trigonometry together, in course order.

College Algebra

1 class
College Algebra by Topic
Functions, polynomials, logarithms, matrices, conics, and series. No trigonometry.

Algebra

3 classes
Algebra 1 by Topic
Linear equations, graphing, systems, polynomials, and factoring.
Algebra 2 by Topic
Rational expressions, radicals, quadratics, functions, and logarithms.
Algebra 1 & 2 by Topic
Beginning and intermediate algebra together, in course order.

Placement

1 class
Math Placement Exam Review
Getting ready for a math placement exam? Start with the pre-assessment — it shows you which topics you already know and which ones to review, so you only spend time where you need it. Covers fractions, decimals, order of operations, exponents, equations and inequalities, lines and systems, polynomials, factoring, quadratic and absolute value equations, radicals, functions, inverse functions, exponentials, and logarithms.