Article
PBS

Pbs Newshour Extra: Week of 2 17 14: Inequality in Education Across n.c. Schools

For Students 9th - 10th
A video and brief article cover the issue of access to arts education in North Carolina public schools. [8:10]
Website
National Council of Teachers of Mathematics

The Math Forum: Ask Dr. Math: Reversing the Inequality Symbol

For Students 9th - 10th Standards
"Dr. Math" responds to a student inquiry of why it is necessary to reverse the inequality sign when multiplying/dividing by a negative value.
Activity
University of Regina (Canada)

University of Regina: Math Central: Reversing the Inequality Symbol

For Students 9th - 10th Standards
In response to a student question regarding the reversing of the inequality symbol, a method is presented in how one can avoid reversing the symbol.
Graphic
Curated OER

Science Kids: Science Images: Inequation Sign

For Students 9th - 10th
This picture is an inequation sign, used in mathematics to state that two expressions or objects are not the same, or do not have the same value.
Unit Plan
Math Planet

Math Planet: Solving Absolute Value Equations and Inequalities

For Students 9th - 10th
The absolute value of a number a is written as |a| and represents the distance between a and 0 on a number line. An absolute value equation is an equation that contains an absolute value expression. The equation |x|= a has two solutions...
Unit Plan
Varsity Tutors

Varsity Tutors: Hotmath: Algebra Review: Absolute Value Inequalities

For Students 9th - 10th Standards
Find a quick, concise explanation of how to solve an absolute value inequality. Step by step examples are included to help you understand how to solve this inequality by breaking it into a compound inequality.
Unit Plan
CK-12 Foundation

Ck 12: Algebra: Words That Describe Patterns

For Students 9th - 10th
[Free Registration/Login may be required to access all resource tools.] Translate a verbal expression into an algebraic equation or inequality.
Unit Plan
National Council of Teachers of Mathematics

The Math Forum: Ask Dr. Math: Solving Inequalities

For Students 9th - 10th Standards
This site goes through steps to graph an inequality posed by a student.
Activity
Oswego City School District

Regents Exam Prep Center: Linear Inequalities

For Students 9th - 10th
Listed steps to graph an inequality along with a example that is graphed on a coordinate plane. Easy to read and understand!
Unit Plan
Mathigon

Mathigon: Geometry: Angles and Polygons: Drawing Triangles

For Students 9th - 10th Standards
This lesson focuses on the Triangle Inequality, when the sum of the lengths of any two sides of a triangle is greater than the length of the third. When this happens, the three sides cannot form a triangle.
Website
Purple Math

Purplemath: Solving Linear Inequalities: Introduction and Formatting

For Students 9th - 10th Standards
This resource demonstrates how to solve linear inequalities step-by-step and shows four different solution formats/notations viz. inequality notation, set notation, interval notation, and the last "notation" which is more of an...
Handout
CK-12 Foundation

Ck 12: Geometry: Inequalities in Triangles Study Guide

For Students 9th - 10th
This study guide on triangle inequalities discusses comparing angles and sides, the Triangle Inequality Theorem, and the Hinge Theorem. It is available for download with free registration.
Professional Doc
AdLit

Ad lit.org: The Evidence Suggests Otherwise: The Truth About Boys and Girls

For Teachers 9th - 10th
The media has latched on to the story that American boys are falling behind girls academically and are increasingly outnumbered in college. But what do the numbers show? Referencing more than 30 years of test scores and current research,...
Activity
Texas Instruments

Texas Instruments: Verify Absolute Value Inequalities With a Graphical Approach

For Teachers 9th - 10th
Find the solution sets of absolute value inequalities like abs(x-3)5 using the equation editor (y=). Focus on finding the boundaries of inequality intervals.
Interactive
Mr. Martini's Classroom

Mr. Martini's Classroom: Mr. Martini's Classroom: Kids Math Comparing Numbers

For Students Pre-K - 1st Standards
Compare numbers from 1 to 40 using inequality symbols and equal sign with this interactive game.
Lesson Plan
Illustrative Mathematics

Illustrative Mathematics: 7.ee Sports Equipment Set

For Teachers 7th
In this lesson, 7th graders write and solve an inequality to solve the problem.
Unit Plan
Paul Dawkins

Paul's Online Notes: Calculus I: Proof of Various Limit Properties

For Students 9th - 10th
The tutorial proves some of the basic properties and facts about limits. Topics discussed are limit properties, triangle inequality, continuity, and limits at infinity. Class notes, definitions, and examples with detailed solutions are...
Activity
Varsity Tutors

Varsity Tutors: Hotmath: Graphing Calculator Practice Problems

For Students 9th - 10th Standards
Practice using your graphing calculator for linear equation and linear inequality problems. If you get stumped or if you would like to check your work, then select the View Solution button, which is located directly under each problem.
Unit Plan
CK-12 Foundation

Ck 12: Analysis: Induction and Inequalities

For Students 10th - 12th
[Free Registration/Login may be required to access all resource tools.] The transitive property of inequality and induction with inequalities. Students examine guided notes, review guided practice, watch instructional videos and attempt...
Unit Plan
CK-12 Foundation

Ck 12: Elem Math: Inequalities

For Students 3rd - 5th
[Free Registration/Login may be required to access all resource tools.] For this learning module, students are given a number sentence expressed as an inequality and must fill in a blank to make it true. Includes video demonstrating a...
Handout
National Council of Teachers of Mathematics

The Math Forum: Ask Dr. Math: Solving Linear Inequalities: Picture a Number Line

For Students 9th - 10th Standards
Dr. Math presents a visual (graphical) approach to solving a conjunction inequality.
Lesson Plan
University of Minnesota

University of Minnesota: Immigration Syllabus: Weeks 1 2

For Students 11th - 12th
Week 1: Why study immigration? What does the study of immigration reveal about U.S. history and which stories we tell about ourselves as a people? Week 2: Settlers, Servants, and Slaves in British, French, and Spanish Colonial America:...
Unknown Type
Khan Academy

Khan Academy: Two Variable Inequalities From Their Graphs

For Students 9th - 10th Standards
Fit an algebraic two-variable inequality to its appropriate graph. 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: Beginning Algebra: Graphing Linear Inequalities

For Students 9th - 10th Standards
A tutorial on how to graph a linear inequality in two variables. The tutorial offers step-by-step instruction and examples of how to graph linear inequalities.

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