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.
Other
Quick Math: Solving Inequalities
Provides an interactive tool that solves inequalities for you. Gives exact and approximate solutions. Further down the page there is a discussion of how to solve intermediate and advanced inequalities as well as information about how to...
Math Open Reference
Math Open Reference: A Formal View of Limits
Explore the triangle inequality theorem with this helpful reference tool. Provides a detailed definition and an interactive activity that enhances further explanation. Includes links to related topics.
Math Open Reference
Math Open Reference: Triangles
A complete reference guide to types of triangles and triangle perimeter and area. It provides definitions and interactive animated activities that enhance further explanation.
Discovery Education
Discovery Education: Web Math: Algebra
This WebMath site provides links to tutorials and lessons in both Algebra I and II. Links to topics such as factoring, solving equations, polynomials, simplifying equations, graphing, and much more.
University of Georgia
University of Georgia: Inter Math: Linear Equation
This site defines a linear equation in a very basic and understandable way. The opening page gives examples of linear equations and questions posed to the reader which may be answered easily by examining the definition given. Be sure to...
University of Saskatchewan (Canada)
University of Saskatchewan: Inequalities
This University of Saskatchewan looks at the basic rules of solving inequalities, concentrating on inequalities with absolute values. Includes example problems and exercises with their solutions.
Illustrative Mathematics
Illustrative Mathematics: A Rei Reasoning With Linear Inequalities
Students are presented with a solution to an inequality and are asked to find two mathematical errors and explain why they are incorrect. Aligns with A-REI.B.3 and A-REI.A.1.
Math Is Fun
Math Is Fun: Solving Inequalities
Learners investigate how to solve inequalities. The educational resource consists of notes about the concept, detailed examples, and practice problems.
Math Is Fun
Math Is Fun: Inequalities
Learners investigate inequalities. The educational resource consists of notes about the concept and detailed examples.
Math Medics
S.o.s. Math: Sign of a Quadratic Function and Inequalities
This lesson discusses the sign of a quadratic function as it applies to inequalities.
National Council of Teachers of Mathematics
The Math Forum: Ask Dr. Math: Solving a Logarithmic Inequality
"Dr. Math" from Drexel University responds to a student question about solving a logarithmic inequality.
Math Open Reference
Math Open Reference: Triangle Inequality Theorem
Explore the triangle inequality theorem with this helpful reference tool. Provides a detailed definition and an interactive activity that enhances further explanation. Includes links to related topics.
Math Open Reference
Math Open Reference: Triangle Inequality Theorem Converse
Learn about the Triangle Inequality Theorem Converse with this helpful reference tool. Provides a definition and interactive that enhance further explanation. Includes links to related topics.
University of Regina (Canada)
University of Regina: Math Central: Solving Absolute Value Inequality
In response to a student submitted problem that involves an absolute value inequality, a solution to the problem with an explanation of steps is given for you to follow. Site by University of Regina.
National Council of Teachers of Mathematics
The Math Forum: Ask Dr. Math: Using Interval Notation to Express Answers
"Dr. Math" responds to a student question about solving an inequality involving a variable in the denominator.
National Council of Teachers of Mathematics
The Math Forum: Ask Dr. Math: Inequalities
"Dr. Math" responds to a student question about solving inequalities. Within the response, a list of the properties of inequalities is provided. Site by Math Forum
University of Regina (Canada)
University of Regina: Math Central: Graphing a System of Inequalities
A solution is presented to a student-submitted problem. The problem involves graphing and finding the solution set to a system of inequalities.
National Council of Teachers of Mathematics
The Math Forum: Ask Dr. Math: Solving Inequalities W/ Absolute Values
In responding to a student question on how to solve absolute value inequalities, "Dr. Math" explains why it is necessary to solve two inequalities.
National Council of Teachers of Mathematics
The Math Forum: Ask Dr. Math: Solving Inequalities and Absolute Values
"Dr. Math" provides an indepth explanation in solving inequalities that involve absolute value. The indepth explanation revolves around a specific problem sent in by a student. This site includes a graph of the absolute value problem.
Wolfram Research
Wolfram Math World: Algebra
MathWorld provides a basic overview of Algebra. Includes a few formulas and many links to related topics.
Free Math Help
Free Math Help: Triangle Inequalities
The lesson investigates the Geometry topic of triangle inequalities. Students learn about the concept and view diagrams and exercises with solutions.
McGraw Hill
Glencoe: Self Check Quizzes 2 Inequalities
Use Glencoe's Math Course 2 randomly generated self-checking quiz to test your knowledge of inequalities. Each question has a "Hint" link to help. Choose the correct answer for each problem. At the bottom of the page click the "Check It"...
Oswego City School District
Regents Exam Prep Center: Algebra Ii: Absolute Value Inequalities
Resources to help you plan classroom instruction on absolute value inequalities: a lesson with several examples and step-by-step solutions; a six-question quiz with answers; and a teacher resource with guidelines for setting up and...