Algebra 1 The language the rest of mathematics is written in: expressions and equations, inequalities, functions and their graphs, lines, systems, polynomials and factoring — ending at quadratic equations. Taught from zero, one interactive idea at a time.
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The course — 8 units, in order
01 Expressions & Operations Variables, evaluating and simplifying, exponents, order of operations, and words-to-algebra. Start 02 Solving Linear Equations One-step to both-sides equations, fractions and special cases, and rearranging formulas. Start 03 Linear Inequalities Solving and graphing, the negative-flip rule, compound and/or, and absolute-value equations. Start 04 Introduction to Functions The one-output rule, f(x) notation, domain and range, and reading real-world graphs. Start 05 Linear Functions & Slope Slope as a rate, y = mx + b, point-slope and standard forms, parallel and perpendicular lines. Start 06 Systems of Equations Graphing, substitution, elimination, applications, and the no-solution/infinite cases. Start 07 Polynomials & Factoring Polynomial arithmetic, the special products, and factoring — GCF, trinomials, difference of squares. Start 08 Quadratic Equations & Functions Parabola anatomy, factoring and square roots, completing the square, the formula, the discriminant. Start