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Pre-Algebra

Foundations

The bridge from arithmetic to algebra: integers, fractions, decimals and percents made rigorous, then variables, equations, the coordinate plane and basic geometry.

14 topics · 145 lessons about 65 hoursBefore this: Grade 6

What you'll be able to do

  • Translate words into expressions and equations
  • Solve one- and two-step equations and inequalities
  • Use proportions, percents and exponent rules
  • Read and draw graphs on the coordinate plane

Start the course

Go through each topic step by step — prose, worked examples, quick checks, and a timed practice round after every section.

Every test ends with a score by topic and a list of what to revisit. Test out of a topic with 80% or better to mark it mastered.

Topics

1.

Core Ideas in Plain Terms

5 lessons

The foundations, in everyday language

2.

Introduction to Algebra

10 lessons

Variables, expressions, properties, and simplifying

3.

Equations & Inequalities

12 lessons

Solving one-step and two-step equations and inequalities

4.

The Coordinate Plane

9 lessons

Points, quadrants, tables, and graphing lines

5.

Geometry Basics

10 lessons

Points, angles, shapes, and the formulas that measure them

6.

Data, Statistics & Probability

10 lessons

Measures of center and spread, reading and making graphs, interpreting data, and finding the probability of events as fractions, decimals, and percents

7.

Whole Numbers & Operations

10 lessons

Place value, rounding, the four operations, order of operations, and exponents

8.

Integers

11 lessons

Everything you need to know about negative numbers

9.

Factors & Multiples

10 lessons

Everything about factors, multiples, primes, GCF, and LCM

10.

Fractions

12 lessons

Everything you need to master parts of a whole

11.

Decimals

10 lessons

Everything you need to master decimal place value, operations, and word problems

12.

Ratios, Rates & Proportions

9 lessons

Writing and simplifying ratios, equivalent ratios, unit rates and best buys, solving proportions, scale drawings, and similar figures

13.

Percents

10 lessons

What percent means, converting among fractions/decimals/percents, the three percent problems, percent change, and real-world money math

14.

Rational Numbers

11 lessons

Fractions and decimals, positive and negative, all in one family

15.

Exponents & Roots

11 lessons

Powers, exponent rules, scientific notation, square roots, and order of operations

16.

Course Review

14 lessons

All 14 topics: definitions, rules, and formulas for whole numbers through statistics and probability