Algebra 1

A complete, friendly Algebra 1 course you can read at your own pace.

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• Unit 1 · Foundations & the Language of Algebra
  Variables, the equals sign as a balance, the number system & number line, order of operations, factors & exponents, negative numbers, expressions vs. equations
• Unit 2 · Solving Linear Equations
  One- and two-step equations, like terms, distributive property, variables on both sides, fractions in equations
• Unit 3 · Proportional Reasoning (the bridge to linearity)
  Ratios, rates, unit rate, proportions, percents
• Unit 4 · Introducing Functions
  What a function is, f(x) notation, domain & range, table/graph/equation/words
• Unit 5 · Linear Functions & Their Graphs
  Coordinate plane, graphing, slope, slope-intercept, writing equations of lines
• Unit 6 · Modeling & Translation
  Turning words into equations; number/age/distance/value & relationship problems; intro scatter plots
• Unit 7 · Systems of Equations
  Two equations, two unknowns: graphing, substitution, elimination, special cases
• Unit 8 · Inequalities
  One-variable, the sign-flip, compound, absolute value, two-variable graphing
• Unit 9 · Sequences & Exponential Functions
  Arithmetic/geometric sequences as functions, exponential growth & decay, linear vs. exponential
• Unit 10 · Exponents & Polynomials
  Exponent rules, scientific notation, polynomial operations, FOIL/area model
• Unit 11 · Factoring
  GCF, factoring trinomials, special patterns
• Unit 12 · Quadratic Functions & Equations (the capstone)
  Square roots & radicals, x²=9, factoring, completing the square, quadratic formula, parabolas
• Appendix · Data & Statistics
  One/two-variable statistics, line of best fit, correlation vs. causation, two-way tables