Handout
Quia

Ixl Learning: Slope

For Students 9th - 10th
Brush up on your math skills relating to slope then try some practice problems to test your understanding.
Interactive
Visual Fractions

Visual Fractions: Fraction Division With Lines

For Students 4th - 7th Standards
Once the dividend is correctly identified, a rectangle representing the divisor will appear. The divisor is the horizontal distance of the blue arrow. The program will not continue unless the dividend or the divisor are correctly...
Unit Plan
Texas A&M University

Wtamu Virtual Math Lab: Intermediate Algebra

For Students 9th - 10th
This site is a tutorial for students in algebra 2 or for those who need a refresher. The site has explanations, definitions, examples, practice problems and practice tests are found covering topics such as linear equations, graphing,...
Website
Other

Relationships: Dynamics

For Students 9th - 10th
The dynamics of shape in art and the relationship of shape with the other elements of art. The effects of angles and lines on perception.
PPT
Other

Harold Olejarz: Interactive Horizon Line

For Students 9th - 10th
An interesting interactive slide show about perspective, including the horizon line and vanishing points.
Graphic
Curated OER

Science Kids: Science Images: Parallel Lines Cafe Wall Illusion

For Students 9th - 10th
This famous optical illusion makes the parallel horizontal lines appear to be bent when in fact they are straight. It was originally noticed amongst the tiles of a cafe wall and can now be seen in architecture such as on a large building...
Unit Plan
National Council of Teachers of Mathematics

The Math Forum: Ask Dr. Math: When Is a Slope 0 or Undefined?

For Students 9th - 10th Standards
At this site Dr. Math gives a discussion on the slopes of lines. The Dr. gives an analogy between the slope of a line and walking up and down hills. The Dr. explores the concept of undefined and zero slopes through his response to a...
Activity
Other

Art Education: Drawing in One Point Perspective

For Students 9th - 10th Standards
A fascinating interactive site showing how to use lines in on-point perspective drawings.
Handout
Quia

Ixl Learning: Linear Equations

For Students 9th - 10th Standards
Brush up on your math skills relating to linear equations then try some practice problems to test your understanding.
Handout
Oswego City School District

Regents Exam Prep Center: Algebra 2: Definition of Inverse Function

For Students 9th - 10th Standards
An introductory look at the definition of an inverse function, the notation used for inverse functions, and tests used to determine whether a function will have an inverse. Several examples are provided for the student to scroll through...
Handout
ArtLex

Art Lex: Horizon Line

For Students 9th - 10th
Scroll down to find a definition of horizontal with hyperlinks to other definitions on the site.
Unit Plan
Khan Academy

Khan Academy: Distance Between Points: Vertical or Horizontal

For Students 5th - 7th Standards
Practice finding the distance between two points on the coordinate plane that share the same x- or y-coordinate. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Unit Plan
Texas A&M University

Wtamu Virtual Math Lab: Intermediate Algebra: Graphing Linear Equations

For Students 9th - 10th Standards
A simple tutorial that will show you how to graph linear equations and functions after finding the x- and y-intercepts. Provides definitions, steps for sketching a graph, and several examples of linear equations and their graphs....
Handout
Washington State University

Washington State University: Graphing Linear Equations

For Students 9th - 10th Standards
This site explains what a linear equation is, general forms of linear equations, how to graph a line using the method of plotting points. The site also details how to find points on the line given the equation, information about the...
Website
Great Idea Finder

The Great Idea Finder: Television

For Students 9th - 10th
This site provides an introduction to the ideas behind the invention of television. The site includes a good selection of links to more information and a bibliography.
Activity
University of North Carolina

University North Carolina Wilmington: Inverse Functions

For Students 9th - 10th Standards
Take a look at inverse functions from their definition to graphing them. This site also shows you how to find the inverse of a function.
Unit Plan
The Math League

The Math League: Using Data and Statistics

For Students 3rd - 5th Standards
This site contains two short examples of line graphs, charts that show change over time. This is a quick introduction to the topic of statistical graphing.
Unit Plan
CK-12 Foundation

Ck 12: Algebra: Graphs of Linear Equations

For Students 7th - 8th Standards
[Free Registration/Login may be required to access all resource tools.] Students learn to use a table to graph functions recognizing linear equations and the equations of horizontal lines and vertical lines. Students examine guided...
Activity
Texas Instruments

Texas Instruments: Defining the Parabola

For Teachers 9th - 10th
The teacher will graph a horizontal line and plot a point using TI-Navigator, and the class will provide the points that create a parabola.
Unit Plan
Texas A&M University

Wtamu Virtual Math Lab: Beginning Algebra: Intercepts

For Students 9th - 10th
Learn how to find the x and y intercepts of a linear function, to graph the function using the intercepts, and to graph vertical and horizontal lines. The tutorial offers many examples with clear step-by-step examples.
Website
Birmingham Museums Trust (UK)

Birmingham Museum & Art Gallery: Learning About Landscapes

For Students Pre-K - 1st
Take a look at aspects of drawing landscapes from horizontal lines to titles of some landscapes on display in the Birmingham Art Gallery.
Article
Khan Academy

Khan Academy: Mondrian, Composition With Red, Blue, and Yellow

For Students 9th - 10th
Piet Mondrian's painting, "Composition with Red, Blue, and Yellow", is a collection of rectilinear forms, squares, and rectangles defined by vertical and horizontal lines. His style is called Neo-Plasticism or "The New Plastic Painting"....
Interactive
ABCya

Ab Cya: 10 X 10 Ice Cream Adventure

For Students 3rd - 6th
10 x 10 is a fun puzzle game for the whole family! Help Mr. Pebbles score points by dragging the ice cream into the grid to fill up vertical and horizontal lines. There are lots of tasty ice cream treats to help you along the way!
Handout
Windstream

Ojk's Precalculus Study Page: Reflections and Symmetry

For Students 9th - 10th
An introduction to the various types of symmetries that can occur in the graphs of functions. Uses vertical, horizontal, and oblique reflections as a means of recognizing symmetries.

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