The Algebra 1 course, often taught in the 9th grade, covers Linear equations, inequalities, functions, and graphs; Systems of equations and inequalities; Extension of the concept of a …

Created by experts, Khan Academy’s library of trusted, standards-aligned practice and lessons covers math K-12 through early college, grammar, science, history, AP®, SAT®, and more.

Algebra (all content) 20 units · 412 skills Unit 1 Introduction to algebra Unit 2 Solving basic equations & inequalities (one variable, linear) Unit 3 Linear equations, functions, & graphs

Learn the basics of algebra—focused on common mathematical relationships, such as linear relationships.

College Algebra 14 units · 105 skills Unit 1 Linear equations and inequalities Unit 2 Graphs and forms of linear equations Unit 3 Functions

Khan Academy's Algebra 2 course is built to deliver a comprehensive, illuminating, engaging, and Common Core aligned experience!

Course challenge Test your knowledge of the skills in this course. Start Course challenge

Learn seventh grade math aligned to the Eureka Math/EngageNY curriculum—proportions, algebra basics, arithmetic with negative numbers, probability, circles, and more.

Learn eighth grade math—functions, linear equations, geometric transformations, and more. (aligned with Common Core standards)

This Arithmetic course is a refresher of place value and operations (addition, subtraction, division, multiplication, and exponents) for whole numbers, fractions, decimals, and integers.