Curated OER
Weighing Time
Students devise a strategy to solve problems that is done in a systematic and mathematical fashion. The finding of the unknown value is the focus of the instructional activity. To solve linear equations proficiently is the skill of the...
Curated OER
Systems of Linear Inequalities in Slope-Intercept Form -- Lecture
Students are introduced to linear inequalities in slope-intercept form. As a class, they participate when needed in a demonstration given by their teacher and practice graphing inequalities and describing the solution. They set up and...
Curated OER
The Lady's Age
Learners use a game to establish the context of solving problems in a systematic and mathematical fashion. They also solve various types of equations to find reasonable solutions.
Curated OER
The Old Chicken Run Problem
Sixth graders apply problem solving strategies to work with a real life situation in which they need to determine the area. They determine the area of chicken runs that are rectangular in shape when give a partial perimeter.
Curated OER
Square Milk Bottle Crates
Pupils attempt a problem that Students has the potential to have more than one solution. Hence the problem is accessible to a wide range of pupils. The problem is essentially about finding patterns and this is typical of a number of such...
Curated OER
Polygonal Strings
Sixth graders apply knowledge of how to calculate the area and perimeter of triangles. They determine why it is inappropriate to measure the area of land by its perimeter which is done in certain areas of New Guinea. They complete a...
Curated OER
System of Two Quadratic Inequalities
Students set up and solve a system of quadratic inequalities related to real-world situations.
Texas A&M University
Wtamu Virtual Math Lab: Intermediate Algebra
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,...
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.
Purple Math
Purplemath: Algebra Resources
Purplemath contains about 40 different lessons on various algebra topics. The lessons are divided into five different sections: preliminary topics, beginning algebra, intermediate algebra, advanced algebra, and word problems. The lessons...
Richland Community College
Richland Community College: Algebra Lecture Notes
This site from Richland Community College provides lecture notes to a class on Algebra. It covers a wide array of topics including functions, quadratic equations, inequalities, and much more.
CK-12 Foundation
Ck 12: Algebra: Words That Describe Patterns
[Free Registration/Login may be required to access all resource tools.] Translate a verbal expression into an algebraic equation or inequality.
Wolfram Research
Wolfram Mathworld: Inequality
This site provides a brief overview of inequality. Content includes a definition and several examples using graphical images. (Absolute value graphs are used in this site.)
Khan Academy
Khan Academy: Solutions of Inequalities: Algebraic
Given a two-variable linear inequality, check whether a given pair of values is a solution of the inequality. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video, or receive hints.
Other
Algebra.com: Homework Solvers
This site offers both instruction and homework help in several algebraic topics, including topics within Pre-Algebra, Algebra I, and Algebra II.
Khan Academy
Khan Academy: Two Step Inequality Word Problems
Practice solving two-step inequality word problems.
Math Planet
Math Planet: Algebra 2: Graph Inequalities
How to graph an inequality is explained through examples and a video lesson. [4:14]
CK-12 Foundation
Ck 12: Algebra: Testing Solutions for Linear Inequalities
[Free Registration/Login may be required to access all resource tools.] This lesson covers testing ordered pairs to see if they are solutions to a linear inequality in two variables.
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.
Khan Academy
Khan Academy: Solutions of Inequalities: Algebraic
Given a two-variable linear inequality, check whether a given pair of values is a solution of the inequality.
Varsity Tutors
Varsity Tutors: Hotmath: Algebra Review: Absolute Value Inequalities
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.
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.
CK-12 Foundation
Ck 12: Algebra: Solve Inequalities Using Multiplication
[Free Registration/Login may be required to access all resource tools.] Students learn to use multiplication to solve inequalities. Students examine guided notes, review vocabulary and attempt practice problems in order to master the...
Math Is Fun
Math Is Fun: Solving Inequality Word Questions
This tutorial models how to solve word problems which state that one unknown variable is greater or less than another. Includes detailed explanations of sample problems and ten practice questions to try.