Lesson Plan
Curated OER

Triangle Inequality

For Teachers 4th - 6th
Students discover that the sum of the lengths of any two sides of a triangle must be greater than the third side. They are shown how a triangle is formed using three strips such as that the triangle is seen inside the strips.
Lesson Plan
Curated OER

Triangle Inequality Theorem

For Teachers 9th - 12th Standards
High schoolers investigate the relationship between angle measures and sides of a triangle and the relationships among the three sides of a triangle. The use of technology (Cabri, Jr.) allows learners to make and test conjectures as they...
Lesson Plan
Curated OER

Inequalities and Triangles

For Teachers 9th - 10th
Students prove and apply theorems of triangle inequality and hinge theorem. In this geometry lesson, students will discuss which triangle is bigger and why. They will use theorems, such as Exterior Angle Inequality or the Pythagorean...
Activity
Education Development Center

Absolute Value Reasoning

For Students 6th - 7th Standards
Teach solving absolute value inequalities through inquiry. Groups use their knowledge of absolute value and solving inequalities to find a solution set to an absolute value inequality. Working collaboratively encourages discussion,...
Assessment
Mathed Up!

Inequalities

For Students 7th - 9th Standards
Develop an understanding of things that are not equal. The video demonstrates three types of questions involving inequalities as a review for the General Certificate of Secondary Education math assessment. Pupils work through the...
Lesson Plan
Curated OER

Triangle Inequality Theorem

For Teachers 7th - 9th
Pupils identify properties of triangles. In this geometry lesson, students create triangles using three different segments. They make conjectures and predictions.
Lesson Plan
Curated OER

Liquid Killer

For Teachers 5th - 9th
Young scholars explore number sense applications and discuss strategies for multiplication and division using mental math. For cross-curricular purposes, they explore causes and effects of inequality and social injustice. Students...
Worksheet
Curated OER

Algebraic Equations

For Students 9th
For this algebraic equations worksheet, 9th graders solve 10 different problems that include solving various types of algebraic equations. First, they determine the equation of a line and solve the absolute value of an inequality shown....
Worksheet
Curated OER

Algebraic Equations

For Students 7th - 8th
In this algebraic equations worksheet, students solve 9 different problems that include various types of equations used on the sheet. First, they determine the solution of a given inequality. Then, students write the greatest common...
Lesson Plan
Virginia Department of Education

Inequalities

For Teachers 8th - 10th Standards
Compare graphing an inequality in one variable on a number line to graphing an inequality in two variables on a coordinate plane. Young mathematicians work on a puzzle matching inequalities and their solutions. They then complete a...
Lesson Plan
02 x 02 Worksheets

Absolute Value Equations and Inequalities

For Students 9th - 12th Standards
Demonstrate the meaning of an absolute inequality using three different methods. Here, scholars explore absolute value inequalities through graphing, number line distance, and compound inequalities. Pupils complete various activities to...
Lesson Plan
Virginia Department of Education

How Many Triangles?

For Teachers 9th - 11th Standards
Something for young mathematicians to remember: the sum of any two sides must be greater than the third. Class members investigates the Triangle Inequality Theorem to find the relationship between the sides of a triangle. At the...
Unit Plan
Curated OER

GSE Foundations of Algebra: Equations and Inequalities

For Students 7th - 9th
Need lessons on writing and solving one- and two-step linear equations and inequalities, as well as systems of equations? This comprehensive 106-page module from the Georgia Department of Education contains many different lessons for a...
Lesson Plan
Curated OER

Linear Inequalities in One and Two Variables: Rays and Half Planes

For Teachers 9th - 12th Standards
Define rays and half planes, including the concepts of boundary lines and prerequisite knowledge of coordinate planes. Given linear inequalities in one and two variables, your class will compare the differences. They will also graph...
Worksheet
Norm Mitchell

Quiz: Representing, Comparing, and Ordering Decimals

For Students 5th - 7th Standards
Here is a 42-question quiz dealing with decimals to the thousandths place. It is comprehensive in that it has test takers use inequality signs to compare pairs of decimal numbers, choose the least- or greatest-valued nubmer out of a set...
Lesson Plan
Virginia Department of Education

Solving and Graphing Inequalities

For Students 8th Standards
You can't go wrong with a activity that involves candy! Learners solve and graph one-variable inequalities and use candy to graph the solution. Individuals associate open circle graphs with life savers and closed circle graphs with round...
Unit Plan
Mathematics Vision Project

Equations and Inequalities

For Teachers 9th - 10th Standards
Help learners get their facts in line to build and solve complicated linear equations and inequalities. Pupils build upon their knowledge of solving basic equations and inequalities to solve more complex ones. Individuals work with...
Unit Plan
New York City Department of Education

Dance and Text

For Teachers 5th - 7th Standards
Use texts and dances to teach inequalities and equations. A sixth-grade unit covers using variables in equations and inequalities to solve problems. Learners show what they know at the end of the unit using two performance tasks, one...
Lesson Plan
Curated OER

An Introduction To Solving And Graphing Inequalities

For Teachers 10th - 11th
Young scholars graph inequalities and solve the equations. In this algebra lesson, students graph their solutions on a number line and create an inequality for a word problem.
Lesson Plan
Curated OER

Graph Related Linear Inequalities

For Teachers 9th - 12th
Students explore the concept of linear inequalities. In this linear inequality lesson, students graph linear inequalities using Microsoft Excel.
Lesson Plan
Curated OER

Linear Programming and the Inequalz App

For Teachers 9th - 12th Standards
Learners graph system of linear inequalities in this lesson. Your class will use the Inequality Graphing App to enter linear programming functions into the calculator that can be stored for later use. They then determine the maximum for...
Lesson Plan
1
1
Curated OER

Linear Inequalities

For Teachers 10th - 12th Standards
Through exploration of linear programming through graphs and equations of inequalities, learners relate linear programming to real life scenarios, such as business. Graphing and shading is also part of this exercise.
Lesson Plan
Curated OER

Linear Inequalities in Two Variables

For Teachers 9th - 12th Standards
Graph and solve linear equations in two variables. The class relates the concepts of linear equations to the real world.
Lesson Plan
Curated OER

Buying Cars/Financing Cars Compound Interest

For Teachers 11th - 12th
Provide a real world context in which exponential functions are used to determine a eal world phenomena such as compound interest and exponential growth. This instructional activity should be taught after students have mastered the laws...