8th grade math essentials
Learn the essential parts of eighth grade math—functions, linear equations, geometric transformations, and more. This course is aligned with Common Core standards.
7 units157 videos13 hours
Learn it live with a class on Puzzicle · Teachers: use it with your class
Unit 1: Numbers and operations
Repeating decimals
Square roots & cube roots
Irrational numbers
Approximating irrational numbers
Exponent properties
Exponent properties (integer exponents)
Scientific notation intro
Arithmetic with numbers in scientific notation
Unit 2: Solving equations with one unknown
Equations with variables on both sides
Equations with parentheses
Number of solutions to equations
Unit 3: Linear equations and functions
Graphing proportional relationships
Rates & proportional relationships example ✓ Check-ins1:25
Rates & proportional relationships: gas mileage ✓ Check-ins3:19
Graphing proportional relationships: unit rate ✓ Check-ins4:31
Graphing proportional relationships from a table ✓ Check-ins1:12
Graphing proportional relationships from an equation ✓ Check-ins3:09
Intercepts
Slope
Graphing slope-intercept form
Writing slope-intercept equations
Functions
What is a function? ✓ Check-ins7:57
Worked example: Evaluating functions from equation ✓ Check-ins0:59
Function notation example ✓ Check-ins2:13
Worked example: Evaluating functions from graph ✓ Check-ins0:44
Equations vs. functions ✓ Check-ins4:18
Manipulating formulas: temperature ✓ Check-ins2:41
Obtaining a function from an equation ✓ Check-ins3:04
Linear models
Comparing linear functions
Comparing linear functions: equation vs. graph ✓ Check-ins2:23
Comparing linear functions: same rate of change ✓ Check-ins2:36
Comparing linear functions: faster rate of change ✓ Check-ins3:40
Comparing linear functions word problem: climb ✓ Check-ins4:44
Comparing linear functions word problem: walk ✓ Check-ins3:44
Comparing linear functions word problem: work ✓ Check-ins3:46
Constructing linear models for real world relationships
Recognizing functions
Testing if a relationship is a function ✓ Check-ins2:23
Relations and functions ✓ Check-ins6:57
Recognizing functions from graph ✓ Check-ins4:07
Checking if a table represents a function ✓ Check-ins1:16
Recognizing functions from table ✓ Check-ins4:40
Checking if an equation represents a function ✓ Check-ins3:33
Does a vertical line represent a function? ✓ Check-ins1:40
Recognizing functions from verbal description ✓ Check-ins1:31
Recognizing functions from verbal description word problems ✓ Check-ins3:23
Unit 4: Systems of equations
Intro to systems of equations
Systems of equations with graphing
Systems of equations with graphing ✓ Check-ins8:30
Systems of equations with graphing: y=7/5x-5 & y=3/5x-1 ✓ Check-ins2:22
Systems of equations with graphing: 5x+3y=7 & 3x-2y=8 ✓ Check-ins6:35
Systems of equations with graphing: chores ✓ Check-ins5:19
Systems of equations with graphing: exact & approximate solutions ✓ Check-ins5:56
Systems of equations with substitution
Systems of equations with substitution: 2y=x+7 & x=y-4 ✓ Check-ins4:39
Systems of equations with substitution: y=4x-17.5 & y+2x=6.5 ✓ Check-ins4:06
Systems of equations with substitution: -3x-4y=-2 & y=2x-5 ✓ Check-ins4:21
Systems of equations with substitution: 9x+3y=15 & y-x=5 ✓ Check-ins6:04
Systems of equations with substitution: y=-5x+8 & 10x+2y=-2 ✓ Check-ins3:44
Systems of equations with substitution: y=-1/4x+100 & y=-1/4x+120 ✓ Check-ins3:44
Number of solutions to systems of equations
Systems of equations number of solutions: fruit prices (1 of 2) ✓ Check-ins9:25
Systems of equations number of solutions: fruit prices (2 of 2) ✓ Check-ins7:08
Solutions to systems of equations: dependent vs. independent ✓ Check-ins5:10
Number of solutions to a system of equations ✓ Check-ins3:26
Number of solutions to a system of equations graphically ✓ Check-ins6:36
Number of solutions to a system of equations algebraically ✓ Check-ins6:01
How many solutions does a system of linear equations have if there are at least two? ✓ Check-ins2:12
Unit 5: Geometry
Angles between intersecting lines
Triangle angles
Pythagorean theorem
Pythagorean theorem application
Pythagorean theorem and distance between points
Unit 6: Geometry transformations
Transformations intro
Reflections
Properties & definitions of transformations
Unit 7: Data and modeling
Introduction to scatter plots
Interpreting scatter plots
Estimating lines of best fit
Learn this with a class
With a class on Puzzicle this course runs as a timetable of live study parties: your batch watches together and answers the check-ins, sometimes with a teacher leading.
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