Secondary: Math 8
A team of Northshore School District educators curated these supplemental learning resources to support asynchronous learning opportunities. This page includes instructional videos from open educational resources that were used during the 2020-21 school year.
Students enrolled in Math 7 Challenge cover the topics on this page and on Math 7.
Quarter 1
Quarter 1 Math
Big Ideas & Concepts
- Understand that a function is a rule that assigns to each input exactly one output, and the graph of a function is the set of ordered pairs consisting of an input and the corresponding output
- Compare the properties of two functions each represented in a different way (for example, in a table, graph, equation, or description)
- Determine the rate of change and initial value of a function based on a description of a proportional relationship or at least two given (x,y) values
- Using Linear Equations
Instructional Videos
- Khan Academy: Order of Operations
- Virtual Nerd: Adding Integers
- Virtual Nerd: Subtracting Integers
- Khan Academy: Multiplying Integers
- Khan Academy: Dividing Integers
- Khan Academy: Evaluating Expressions with Two Variables
- Khan Academy: Distributive Property
- Khan Academy: Combining Like Terms
- Khan Academy: Combining Like Terms & Distributive Property
- Math Antics: Solving One-Step Equations (Add/Subtract)
- Math Antics: Solving One-Step Equations (Multiply/Divide)
- Khan Academy: Solving Two-Step Equations
- Khan Academy: Solving Two-Step Equations (x/4 + 2 = -16)
- Virtual Nerd: Simplifying before Solving
- Khan Academy: Variables on Both Sides (Fraction Answer)
- Khan Academy: Variables on Both Sides w/ Negative Coefficient
- Virtual Nerd: Equations with No Solution
- Virtual Nerd: Equations with Infinite Solutions (Identity Equations)
- Khan Academy: Number of Solutions
- Virtual Nerd: What is an Inequality?
- Khan Academy: Graphing Inequalities
- Virtual Nerd: Is a Value a Solution to the Inequality?
- Virtual Nerd: Dividing by a Negative (Flipping Inequality Symbol)
- ck12: Solving Inequalities w/ Distributive Property or Variables on Both Sides (2 examples)
- Khan Academy: Solving Inequalities w/ Distributive Property and Variables on Both Slides (1 example)
- Virtual Nerd: Inequalities with Variables on Both Sides (no inverse operations shown)
- Virtual Nerd: Recursive Routines (Finding Rule)
- Virtual Nerd: Recursive Routines (Finding Missing Terms)
- Math Antics: Graphing on Coordinate Plane
- Khan Academy: Finding a Visual Pattern/Making a Table
- Khan Academy: Finding a Visual Pattern
- Khan Academy: Finding a Visual Pattern/Making a Table
- Khan Academy: Finding a Visual Pattern
- Virtual Nerd: Rate of Change from Table
- ck12: Writing Rule from Input/Output Table (y = x + 2)
- ck12: Writing Rule from Input/Output Table (y = 2x + 1)
- Virtual Nerd: Making Tables from Equations
- Khan Academy: Slope (Intro and ∆y/∆x)
- Khan Academy: Positive/Negative Slope (1, 2, -1, -2)
- Virtual Nerd: Slope from a Graph using Points
- Khan Academy: Negative Slope (-1/3)
- Virtual Nerd: Zero Slope
- Virtual Nerd: Undefined Slope
- ck12: Classifying Slope
- Virtual Nerd: Slope Formula
- Virtual Nerd: Slope from Two Points
- Virtual Nerd: What is a Direct Variation?
- Virtual Nerd: Graph of a Direct Variation
- Virtual Nerd: Finding k in a Direct Variation Equation
- Virtual Nerd: Writing a Direct Variation Equation using a Point
- Virtual Nerd: Finding y when Given x (Direct Variation)
- Virtual Nerd: Writing and Using Direct Variation (Real Life)
- Virtual Nerd: Slope-Intercept Form
- Virtual Nerd: Slope-Intercept Form from a Graph
- Virtual Nerd: What is a y-Intercept?
- Virtual Nerd: Writing Equation if Given Slope and y-Intercept
- Virtual Nerd: Solving For b (y-Intercept)
- Khan Academy: Equation from Slope and a Point
- Khan Academy: Equation from Two Points
- Virtual Nerd: Writing an Equation from Two Points
- Khan Academy: Introducing Graphing in Slope-Intercept Form
- Virtual Nerd: Graphing in Slope-Intercept Form (y = 2x - 2)
- Khan Academy: Graphing in Slope-Intercept Form (y = 1/3x - 2)
- Khan Academy: Slope & Intercept Meaning in a Graph (in context)
- Khan Academy: Slope & Intercept Meaning from a Table (in context)
- Khan Academy: Finding y-intercept in a Table (working backwards)
- Virtual Nerd: Writing Equation in Slope-Intercept from Word Problem
- Khan Academy: Converting into Slope-Intercept Form
- Khan Academy: Converting into Standard Form from Slope-Intercept
- Khan Academy: Graphing Standard Form by Converting to y=mx + b
- Khan Academy: Is the Ordered Pair a Solution to the Equation
- Khan Academy: Is the Ordered Pair a Solution to the Equation #2
- Virtual Nerd: What is a Linear Inequality?
- Khan Academy: Intro to Graphing Linear Inequalities
- Khan Academy: Graphing Linear Inequalities
- Khan Academy: Writing Linear Inequality from Graph
- Virtual Nerd: Is an Ordered Pair a Solution to a Linear Inequality?
- Khan Academy: Is an Ordered Pair a Solution to a Linear Inequality? (Includes Graph)
- Virtual Nerd: Linear vs. Nonlinear Graphs
Quarter 2
Quarter 2 Math
Big Ideas & Concepts
- Using Linear Equations
- Systems of Equations
- Two-Variable Data
Instructional Videos
- Graphs of proportional relationships
- Identifying proportional relationships from graphs
- Proportional relationships: graphs
- Interpreting graphs of proportional relationships
- Rates & proportional relationships example
- Rates & proportional relationships: gas mileage
- Graphing proportional relationships: unit rate
- Graphing proportional relationships from a table
- Graphing proportional relationships from an equation
- Graphing slope-intercept form
- Graph from slope-intercept equation
- Graphing slope-intercept form
- Graphing lines from slope-intercept form review
- Intro to systems of equations
- Systems of equations: trolls, tolls (1 of 2)
- Systems of equations: trolls, tolls (2 of 2)
- Testing a solution to a system of equations
- Systems of equations with graphing
- Systems of equations with graphing
- Systems of equations with graphing
- Systems of equations with graphing: y=7/5x-5 & y=3/5x-1
- Systems of equations with graphing: 5x+3y=7 & 3x-2y=8
- Systems of equations with graphing: chores
- Systems of equations with graphing: exact & approximate solutions
- Solving systems with substitution
- Systems of equations with substitution: 2y=x+7 & x=y-4
- Systems of equations with substitution
- Systems of equations with substitution: y=4x-17.5 & y+2x=6.5
- Systems of equations with substitution: -3x-4y=-2 & y=2x-5
- Systems of equations with substitution: 9x+3y=15 & y-x=5
- Systems of equations with substitution: y=-5x+8 & 10x+2y=-2
- Systems of equations with substitution: y=-1/4x+100 & y=-1/4x+120
- Substitution method review (systems of equations)
- Number of solutions to systems of equations
- Systems of equations number of solutions: fruit prices (1 of 2)
- Systems of equations number of solutions: fruit prices (2 of 2)
- Solutions to systems of equations: dependent vs. independent
- Number of solutions to a system of equations
- Number of solutions to a system of equations graphically
- Number of solutions to a system of equations algebraically
- How many solutions does a system of linear equations have if there are at least two?
- Number of solutions to system of equations review
- Systems of equations word problems
- Age word problem: Imran
- Age word problem: Ben & William
- Age word problem: Arman & Diya
- System of equations word problem: walk & ride
- System of equations word problem: no solution
- System of equations word problem: infinite solutions
- Systems of equations with substitution: coins
- Introduction to scatter plots
- Constructing a scatter plot
- Interpreting scatter plots
- Example of direction in scatterplots
- Scatter plot: smokers
- Outliers in scatter plots
- Clusters in scatter plots
- Estimating lines of best fit
- Estimating the line of best fit exercise
- Line of best fit: smoking in 1945
- Estimating with linear regression (linear models)
- Interpreting a trend line
- Two-way tables
- Two-way frequency tables and Venn diagrams
- Two-way frequency tables
- Two-way relative frequency tables
- Interpreting two-way tables
Quarter 3 & 4
Quarter 3 & 4 Math
Big Ideas & Concepts
- Angles and Triangles
- Pythagorean Theorem
- Geometric Transformations
- Exponents and Volume
Instructional Videos
- Angles, parallel lines, & transversals
- Parallel & perpendicular lines
- Missing Angles with a transversal
- Measures of angles formed by a transversal
- Angles in a triangle sum to 180 degrees proof
- Isosceles & equilateral triangles problems
- Triangle exterior angle example
- Worked example: Triangle angles (intersecting lines)
- Worked example: Triangle angles (diagram)
- Triangle angle challenge problem
- Triangle angle challenge problem 2
- Intro to square roots
- Article: Square roots of perfect squares
- Approximating square roots
- Intro to the Pythagorean theorem
- Pythagorean theorem example
- Pythagorean theorem with isosceles triangle
- Use Pythagorean theorem to find area of an isosceles triangle
- Pythagorean theorem word problem: carpet
- Pythagorean theorem word problem: fishing boat
- Pythagorean theorem in 3D
- Virtual Nerd: 8th Grade Geometry
- PBS: Real Life Math: Woodworker
- PBS: Lines and Angles Playlist
- PBS: Pythagorean Theorem Playlist
- MooMoo Math: Pythagorean Theorem Demonstrations
- Transformations intro
- Translations
- Rotations
- Reflections
- Properties & definitions of transformations
- Dilations
- Congruence and similarity
- Cylinder volume & surface area
- Volume of a sphere
- Volume of a cone