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Website
Cool Math

Coolmath: Perpendicular Lines

For Students 9th - 10th Standards
This CoolMath Resource will help students determine if lines are perpendicular by finding the slope, using the point-slope formula, and graphing.
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Website
Cool Math

Coolmath: Parallel Lines

For Students 9th - 10th Standards
This CoolMath resource will help students understand how to use slope and the point-slope form to determine if two lines are parallel.
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Website
Cool Math

Coolmath: More on Tangent Lines

For Students 9th - 10th
This CoolMath resource provides instruction and practice for tangent lines.
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Activity
Paul Dawkins

Paul's Online Notes: Tangent Lines and Rates of Change: Practice Problems

For Students 9th - 10th Standards
This section introduces two problems: rate of change of a function and tangent lines to functions. Both of these problems will be used to introduce the concept of limits.
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Handout
Math Open Reference

Math Open Reference: Perpendicular Lines

For Students 9th - 10th Standards
A complete reference guide to perpendicular lines. It provides definitions, examples, and an interactive activity that enhances further explanation. Includes links to related topics.
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Handout
Math Open Reference

Math Open Reference: Slope of a Line

For Students 9th - 10th Standards
Learn about the slope of a line with this helpful reference tool. Provides a detailed definition, examples, and an interactive activity that enhances further explanation. Includes links to related topics.
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Handout
Math Open Reference

Math Open Reference: Intercept of a Line

For Students 9th - 10th
A complete reference guide to finding the intercept of a line. It provides definitions, examples, and an interactive activity that enhances further explanation. Includes links to related topics.
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eBook
CK-12 Foundation

Ck 12: Interactive Geometry: 10.4 Slope of Parallel and Perpendicular Lines

For Students 9th - 10th Standards
Understand how to find the slope of parallel and perpendicular lines.
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Interactive
PBS

Pbs Learning Media: Comparing Slopes

For Students 6th - 8th
This interactive exercise focuses on linear equations and how a positive or negative slope affects the graphical representation.
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Unit Plan
PBS

Pbs: The Lowdown: Made in America: The High Cost of Fashion

For Students 6th - 8th
Investigate data on changes over time in where our apparel is made and how much we spend on it in these images from KQED. In the accompanying classroom activity, students use the interactive and graph the data. They also look for...
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Unit Plan
PBS

Pbs: The Lowdown: Analyzing Functional Relationships: An Equitable Society?

For Students 6th - 8th
In this interactive, explore data presented in a series of graphs to evaluate whether we are any closer to having an equitable society than we were in 1963, the year of the historic March on Washington. In the accompanying classroom...
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Unit Plan
PBS

Pbs: String Product: Finding the Y Intercept

For Students 6th - 8th
Examine how a giant piece of art at the National Museum of Mathematics reveals some unexpected relationships between coordinates on a parabola. This video focuses on the relationship between negative and positive points on the parabola...
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Unit Plan
PBS

Pbs: Ski Jumping: Understanding Proportional Relationships

For Students 6th - 8th
Investigate the slopes involved in ski jumping. This video focuses on defining slope, showing how to calculate slope on a graph, with an expression, and positive and negative slopes.
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Unit Plan
PBS

Pbs: Xy Flyer

For Students 6th - 8th
Explore the behavior of lines by composing equations to launch a toy airplane through a series of hoops. This interactive exercise focuses on working in the coordinate plane and deepening the understanding of how slope and y-intercept...
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Professional Doc
Louisiana Department of Education

Louisiana Doe: Louisiana Believes: Eureka Math Parent Guide: Linear Equations

For Students 8th Standards
A guide to support parents as they work with their students in linear equations.
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Unit Plan
PBS

Pbs: Stairway Slope

For Students 6th - 8th
Use the stairs in your home to understand slope in the real world. This video focuses on reinforcing your understanding of slope as rise over run and placing measurements into ratios.
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Unit Plan
PBS

Pbs: Slope and House Construction

For Students 6th - 8th
Discover how math is required for quality construction when a Master Carpenter shares his experience and expertise. This video focuses on explaining slope as rise over run and shows how slope comes into play when building homes to take...
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Lesson Plan
Other

Nearpod: Linear Equations & Graphs

For Teachers 9th - 10th
In this lesson on linear equations and graphs, students will learn how to graph linear equations and create linear equations based upon real-life word problems.
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Lesson Plan
Other

Nearpod: What Is Slope?

For Teachers 9th - 10th
In this lesson on slope, students explore how the rate of change can be identified using a graph, a set of points, and a table.
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Handout
Houghton Mifflin Harcourt

Harcourt: School Publishers: Positive Slope

For Students 9th - 10th
Contains one example of a line with a positive slope. Included is the equation for the line and a definition of a positive slope.
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Handout
Houghton Mifflin Harcourt

Harcourt: School Publishers: Negative Slope

For Students 9th - 10th Standards
This site provides an example of a negative slope, including the equation of the line shown. Also given is a definition of a negative slope.
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Unknown Type
Math.com

Math.com: Graphing Equations Unit Quiz

For Students 6th - 8th Standards
The unit quiz consists of eight true or false questions that examine graphing linear equations. Solutions are provided.
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Website
Wolfram Research

Wolfram Math World: Algebra

For Students 9th - 10th Standards
MathWorld provides a basic overview of Algebra. Includes a few formulas and many links to related topics.
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Activity
Windstream

Ojk's Precalculus Study Page: Functions of Two Variables

For Students 9th - 10th Standards
An introduction to functions with two variables, including several examples relating to linear programming. The tutorial includes graphical examples of the functions and also review questions located at the bottom of the page.