8th grade

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Numbers and operations

Math is all about numbers (like 89 and 3.14) and operations (like addition and multiplication). In these tutorials, we learn about a some new types of numbers and some new types of operations.
Repeating decimals
Square roots & cube roots
Irrational numbers
Approximating irrational numbers
Exponent properties intro
Negative exponents
Exponent properties (integer exponents)
Working with powers of 10
Scientific notation intro
Arithmetic with numbers in scientific notation
Scientific notation word problems

Solving equations with one unknown

Learn how to solve more complicated, multi-step equations like 4x + 5 = 6x -7.
Equations with variables on both sides
Equations with parentheses
Number of solutions to equations
Equations word problems
Equations & geometry

Linear equations and functions

Linear equations like y = 2x + 7 are called "linear" because they make a straight line when we graph them. These tutorials introduce you to linear relationships, their graphs, and functions.
Graphing proportional relationships
Solutions to linear equations
Intercepts
Slope
Slope-intercept form
Functions & function notation
Linear models
Recognizing functions
Linear and nonlinear functions

Systems of equations

A "system of equations" is when we're dealing with more than one equation at the same time. These tutorials show you how to set up and solve systems of equations.
Systems of equations overview
Intro to systems of equations
Systems of equations with graphing
Solving systems with elimination
Solving systems with substitution
Number of solutions to systems of equations
Systems of equations word problems

Geometry

In this topic, we will learn about special angles, such as angles between intersecting lines and triangle angles. Next, we will learn about the Pythagorean theorem. We will find volume of 3D shapes like spheres, cones, and cylinders. Finally, we will learn about translations, rotations, reflections, and congruence and similarity.
Angles between intersecting lines
Triangle angles
Pythagorean theorem
Pythagorean theorem application
Pythagorean theorem and distance between points
Pythagorean theorem proofs
Volume
Translations
Rotations
Reflections
Congruence and similarity

Data and modeling

In this topic, we will learn about scatter plots, lines of best fit, and two-way tables.
Introduction to scatter plots
Interpreting scatter plots
Estimating lines of best fit
Two-way tables

Staff picks

Intro to equations with variables on both sides
Equations with variables on both sides
Linear systems of equations capstone
Scientific notation
Interpreting two-way tables

Review articles

Classifying numbers review
Exponent properties with quotients review
Negative exponents review
Writing repeating decimals as fractions review
Square roots review

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Repeating decimals
Learn how to convert between repeating decimals and fractions.
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