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Interactive
CK-12 Foundation

Systems of Linear Equations in Three Variables: Intersecting Planes - No Solution

For Students 9th - 12th
How many different ways can three planes intersect? The interactive provides three movable planes. Pupils manipulate the planes to determine the number of solutions possible based upon their intersections.
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Interactive
CK-12 Foundation

Checking Solutions to Inequalities: Apples and Bananas Shopping Excursion

For Students 7th - 9th Standards
Go bananas over a fun interactive! Learners drag a point on a virtual graph of an inequality to see if it is a solution. This helps determine the possible numbers of apples and bananas a shopper can buy with a given amount of money.
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Lesson Plan
Curated OER

Graphing Solutions

For Teachers 9th
In this graphing solutions worksheet, 9th graders solve 13 various types of problems. First, they find the solution of each systems by graphing on the coordinate plane provided. Then, students solve each systems of equations...
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Worksheet
Curated OER

Word Problem Solutions

For Students 6th - 7th
In this word problem solutions worksheet, students solve and complete 5 different problems that include solving various types of word problems. First, they calculate the total cost and cost per students for the table shown. Then,...
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Instructional Video15:58
2
2
Flipped Math

Radical Equations

For Students 9th - 12th Standards
There might be an extra solution. Pupils discover that the process of solving a radical equation is the same general process of solving any equation. They find out that in some instances, an extraneous solution occurs. Individuals then...
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Worksheet
Curated OER

Solving Rational Equations 1

For Students 8th - 9th
For this Algebra I worksheet, students solve rational equations that may have extraneous solutions.  The worksheet is two pages and contains twenty problems.  Answer key is provided. 
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Worksheet
Curated OER

Rational Equations

For Students Higher Ed
In this college level mathematics worksheet, students solve rational equations and identify the extraneous solutions.  The two page worksheet contains fifty-eight problems.  Answers are included. 
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Assessment
1
1
Inside Mathematics

Two Solutions

For Teachers 9th - 12th Standards
Many problems in life have more than one possible solution, and the same is true for advanced mathematics. Scholars solve seven problems that all have at least two solutions. Then three higher-level thinking questions challenge them to...
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Handout
Charleston School District

Solving Equations with Infinite or No Solutions

For Students 8th - 9th Standards
Where did all the variables go? Scholars learn how to interpret an equation when they eliminate all variables during the solving process. They interpret the solution as infinite solutions or no solutions. 
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Lesson Plan
EngageNY

Solution Sets to Inequalities with Two Variables

For Students 9th - 10th Standards
What better way to learn graphing inequalities than through discovering your own method! Class members use a discovery approach to finding solutions to inequalities by following steps that lead them through the process and even include...
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Activity
Curated OER

Integer Solutions to Inequality

For Teachers 8th - 11th Standards
When is the last time you assigned your students only one problem? This seemly simple problem requires learners think like a mathematician and reason about how to solve this compound inequality in one variable. More than just using...
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Activity
Curated OER

How does the solution change?

For Teachers 8th - 11th Standards
Four simple equations, each with two variables, try to get at the important question of reasoning about equations. The problem isn't to solve the equations, but to understand the nature of their solutions. These equations address the...
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Lesson Plan
Mathematics Assessment Project

Classifying Solutions to Systems of Equations

For Teachers 8th Standards
Double the fun of solving a linear equation with an activity that asks learners to first compete an assessment task graphing two linear equations to find the common solution. They then complete a card activity solving systems of...
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Lesson Plan
Alabama Learning Exchange

Complex Numbers Solutions

For Students 9th - 12th Standards
Complex doesn't have to mean harder! Learners experiment with online software to determine the quadratic equations with complex solutions. They use the quadratic formula to solve equations with both real and complex solutions.
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Lesson Plan
1
1
Curated OER

How Much Folate?

For Teachers 9th - 12th Standards
This task includes scaffolding to support the introduction of the writing and graphing of linear inequalities. Then your geometry learners discover that writing down all possible combinations is not feasible so they are led to use...
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PPT
Curated OER

Intersecting Graphs

For Teachers 9th - 10th
Ninth graders know how to solve a system of linear equations, but what happens when the system involves an exponential function? The instructional slideshow teaches viewers to determine solutions to systems of equations with linear and...
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Unit Plan
2
2
EngageNY

Polynomial, Rational, and Radical Relationships

For Teachers 9th - 12th Standards
This assessment pair goes way beyond simple graphing, factoring and solving polynomial equations, really forcing learners to investigate the math ideas behind the calculations. Short and to-the-point questions build on one another,...
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Lesson Plan
EngageNY

Linear Equations in Two Variables

For Teachers 8th Standards
Create tables of solutions of linear equations. A lesson has pupils determine solutions for two-variable equations using tables. The class members graph the points on a coordinate graph. 
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Lesson Plan
EngageNY

Writing and Graphing Inequalities in Real-World Problems

For Teachers 6th Standards
Inequalities: when one solution just doesn't suffice. Individuals learn to write inequalities in real-world contexts and graph solution sets on the number line. All inequalities in the instructional activity are of the form x < c or x...
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Lesson Plan
EngageNY

Some Potential Dangers When Solving Equations

For Students 9th - 10th Standards
Need a less abstract approach to introducing extraneous solutions? This is it! Young mathematicians explore properties used to solve equations and determine which operations maintain the same solutions. They eventually find that squaring...
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Worksheet
Curated OER

Nine Exercises Identifying Solution Sets to Systems of Inequalities

For Students 9th - 10th
In this inequality worksheet, students examine graphs of functions and describe the solution set. Explanations and examples are provided. This one-page interactive, multiple choice, worksheet contains nine problems.
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Worksheet
Curated OER

Solving Rational Equations and Checking for Extraneous Solutions

For Students 10th - Higher Ed
In this solving rational equations activity, students solve twenty rational equations making sure to check for extraneous solutions.  The solutions are provided.
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Lesson Plan
Curated OER

Points as solutions

For Teachers 9th
Ninth graders graph linear functions using coordinate points. In this algebra lesson, 9th graders plot points and graph a line. They use the slope intercept form to graph their equation and evaluate points as solution to the function.
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Lesson Plan
Curated OER

Diffusion through Membranes

For Teachers 9th - 10th
Students identify diffusion and its processes through experimentation and calculations. They also use a CBL and conductivity probe to measure the conductivity of various solutions and study the effect of concentration gradients on the...

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