Oswego City School District
Regents Exam Prep Center: Triangle Inequality Theorems
This tutorial discusses triangle inequality and provides practice problems for students to try out their skills. The teacher resource page contains a lesson plan for a yummy activity involving licorice.
National Council of Teachers of Mathematics
The Math Forum: Ask Dr. Math: Solving Inequalities
This site goes through steps to graph an inequality posed by a student.
National Council of Teachers of Mathematics
The Math Forum: Nctm: Ask Dr. Math: Solving Inequalities
In response to a student question about solving an inequality, "Dr. Math" provides a general discussion of what is necessary to solve these types of problems.
Khan Academy
Khan Academy: Two Step Inequality Word Problems
Practice solving two-step inequality word problems.
CK-12 Foundation
Ck 12: Elem Math: Inequalities
[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...
Khan Academy
Khan Academy: Two Step Inequality Word Problems
Try some self-correcting practice two-step inequality word problems.
Texas A&M University
Wtamu Virtual Math Lab: Beginning Algebra: Graphing Linear Inequalities
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.
Mr. Martini's Classroom
Mr. Martini's Classroom: Mr. Martini's Classroom: Kids Math Comparing Numbers
Compare numbers from 1 to 40 using inequality symbols and equal sign with this interactive game.
CK-12 Foundation
Ck 12: Elem Math: Comparing and Writing Decimal Inequalities
[Free Registration/Login may be required to access all resource tools.] The video shows how to compare two decimals using the appropriate inequality sign. The video is followed by practice problems to assess student understanding of the...
CK-12 Foundation
Ck 12: Elem Math: Use Place Value Chart to Compare & Write Decimal Inequalities
[Free Registration/Login may be required to access all resource tools.] The video shows how to use a place value chart to compare two decimals to determine which inequality sign makes the statement true. The video is followed by...
Texas A&M University
Wtamu Virtual Math Lab: Intermediate Algebra: Linear Inequalities
Using this tutorial, you'll learn how to solve linear inequalities and show the solution via interval notation and graphing.
Texas A&M University
Wtamu Virtual Math Lab: Beginning Algebra: Solving Linear Inequalities
This tutorial will show you how to use various properties of inequalities in order to solve linear inequalities and how to graph solution sets on a number line. Offers several examples showing you steps to solving inequalities and...
Texas A&M University
Wtamu Virtual Math Lab: College Algebra: Linear Inequalities
Using this tutorial, you'll learn how to solve different types of linear inequalities by viewing step-by-step written solutions as well as completing practice problems.
National Council of Teachers of Mathematics
The Math Forum: Ask Dr. Math: Triangle Inequality
Dr. Math gives a hint of how to prove the triangle inequality theorem when answering a question posed about proving an absolute value problem using the triangle inequality theorem.
National Council of Teachers of Mathematics
The Math Forum: Ask Dr. Math: A Quadratic Inequality
"Dr. Math" responds to a student question about writing solutions to quadratic inequalities in interval form.
University of Georgia
University of Georgia: Inter Math: Triangle Inequality
This site has a description of the triangle inequality theorem along with a visual representation, and animation explaining the triangle inequality rule with the radii of circles at the segment endpoints. Links to related terms, more...
National Council of Teachers of Mathematics
The Math Forum: Ask Dr. Math: Meaning of an Absolute Value Inequality
"Dr. Math" presents an in-depth discussion of the meaning of an absolute value inequality. The discussion tries to clarify some of the mis-conceptions surrounding absolute value.
Discovery Education
Discovery Education: Web Math: Plot/graph an Inequality
This site provides a step-by-step process to graph an inequality. Simply type in your expression, and the website will graph the expression as well as explain how and why it did what it did.
Wolfram Research
Wolfram Math World: Triangle Inequality
This MathWorld site gives a good explanation of triangle inequality. The reader should be familiar with summation notation.
National Council of Teachers of Mathematics
The Math Forum: Ask Dr. Math: Solving Linear Inequalities: Picture a Number Line
Dr. Math presents a visual (graphical) approach to solving a conjunction inequality.
National Council of Teachers of Mathematics
The Math Forum: Ask Dr. Math: Polynomial Inequality Problem
This site from Drexel University answers student question about solving polynomial inequalities, "Dr. Math" provides a fairly thorough explanation in how to solve such problems.
Math Is Fun
Math Is Fun: Equal, Greater, or Less Than
Find definitions of the equal, not equal, less than, and greater than signs, as well as information what you are supposed to do with them and how they are used in general math and in algebra.
National Council of Teachers of Mathematics
The Math Forum: Ask Dr. Math: Interval Notation
"Dr. Math" provides an explanation on how to express the solution of a conjunction inequality using interval notation.
Math Planet
Math Planet: Algebra 2: Graph Inequalities
How to graph an inequality is explained through examples and a video lesson. [4:14]