Unit Plan
CK-12 Foundation

Ck 12: Algebra: Families of Lines

For Students 8th - 9th
[Free Registration/Login may be required to access all resource tools.] Learn how to express families of linear equations.
Lesson Plan
Illustrative Mathematics

Illustrative Mathematics: 8.ee How Many Solutions?

For Teachers 8th Standards
Eighth graders are given a linear equation and instructed to find a second linear equation in order to make a system of equations that fits different criteria related to its possible solutions. Aligns with 8.EE.C.8.
Activity
National Council of Teachers of Mathematics

The Math Forum: Math Library Maple

For Students 9th - 10th
This site from The Math Forum provides links to sites that relate to solving linear equations by using Maple and other techniques. This site contains on line text books for higer math courses.
Unit Plan
Other

Math Portal: Row Reduction Method

For Students 10th - 12th
A step by step of how to solve systems of linear equations using the row reduction method.
Lesson Plan
Illustrative Mathematics

Illustrative Mathematics: The Intersection of Two Lines

For Teachers 8th Standards
The purpose of this task is to introduce students to systems of equations. It takes skills and concepts that students know up to this point, such as writing the equation of a given line, and uses it to introduce the idea that the...
Lesson Plan
Illustrative Mathematics

Illustrative Mathematics: A rei.c.6: Accurately Weighing Pennies I

For Teachers 9th - 10th
In this problem, students will use the number of decimal places in the coefficients to motivate writing and solving a system of equations. Aligns with A-REI.C.6.
Activity
Texas Instruments

Texas Instruments: Glencoe Algebra 2: Augmented Matrices

For Teachers 9th - 10th
Students will solve systems of linear equations.
Lesson Plan
Illustrative Mathematics

Illustrative Mathematics: A Rei Quinoa Pasta 2

For Teachers 9th - 10th
For this problem, students must determine how much quinoa and how much corn are in a type of pasta. They must study the ingredient list which shows the protein content of the pasta. They know that quinoa has more protein than corn and...
Activity
Interactive Mathematics

Interactive Mathematics: Graphical Solution of Non Linear Systems

For Students 9th - 10th Standards
Using the graphing method, several systems of nonlinear equations are solved. Follow each example step by step to see how solutions are derived.
Activity
Math Medics

S.o.s. Math: Gaussian Elimination

For Students 9th - 10th Standards
In this lesson, the Gaussian Elimination method is used to solve systems of linear equations. Provides several formulas and examples for understanding.
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Math Drills

Math drills.com: Algebra Worksheets

For Students 9th - 10th
Download these worksheets to sharpen your algebraic skills. Sheets focus on missing numbers, translating, simplifying and evaluating algebraic phrases, rewriting formulas, solving linear equations, systems of linear equations and inverse...
Article
Math Planet

Math Planet: The Substitution Method for Solving Linear Systems

For Students 9th - 10th
A way to solve a linear system algebraically is to use the substitution method. The substitution method functions by substituting the one y-value with the other. This resource explains this method by showing an example along with a video.
PPT
Sophia Learning

Sophia: Using Elementary Row Operations to Solve for Systems of Equations

For Students 9th - 10th Standards
This lesson presents how to use elementary row operations to solve for a system of linear equations.
Unit Plan
Texas A&M University

Wtamu Virtual Math Lab: College Algebra: Systems of Nonlinear Equations

For Students 9th - 10th Standards
Learn how to solve a system of nonlinear equations using the substitution and the elimination methods. This tutorial offers definitions, problems and step-by-step solutions, and practice exercises for you to complete and check.
Activity
Texas Instruments

Texas Instruments: Simultaneous Equation Solver App

For Teachers 9th - 10th
Students use this App to calculate solutions (a unique solution, no solution, or an infinite number of solutions.unique) for linear systems. They can work with systems that contain both numeric and symbolic coefficients and have up to 30...
Unit Plan
Oswego City School District

Regents Exam Prep Center: Linear Quadratic Systems

For Students 9th - 10th Standards
The mathematics tutorial explores how to solve linear and quadratic systems of equations. The lesson consists of class notes, calculator tips, examples, and practice problems with solutions. The teacher resource includes a worksheet that...
Unit Plan
CK-12 Foundation

Ck 12: Algebra: Writing and Solving a Matrix Equation

For Students 10th - 12th Standards
[Free Registration/Login may be required to access all resource tools.] This lesson covers using a matrix equation to solve a system of linear equations.
Lesson Plan
Khan Academy

Khan Academy: Lsn 13: Systems of Equations, Algebraic and Graphical Representations

For Teachers 9th - 10th Standards
Lesson 3 of 4 for Passport to Advanced Math. Students will solve systems of equations in two variables in which one equation is linear and the other equation is quadratic or another nonlinear equation; relate properties of the function f...
Unit Plan
Khan Academy

Khan Academy: Linear Systems of Equations Capstone

For Students 7th - 8th Standards
Solve systems of equations with any number of solutions using any solution method. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
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Khan Academy

Khan Academy: Systems of Equations With Elimination

For Students 9th - 10th Standards
Solve systems of equation with one-step elimination (e.g., x-values or y-values cancel each other out).
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Khan Academy

Khan Academy: Systems of Equations With Elimination Challenge

For Students 9th - 10th Standards
Solve systems of equation with multi-step elimination (e.g., a manipulation is needed in order for x-values or y-values to cancel each other out).
Activity
Texas Instruments

Texas Instruments: Solving Equations

For Teachers 9th - 10th
Learn to use the TI-86 to solve many types of equations by following this lesson plan and activity. Included are keystroke instructions and calculator screenprints to guide students.
Whiteboard
ClassFlow

Class Flow: Linear Equations Substitution

For Teachers 9th - 10th Standards
[Free Registration/Login Required] In this Flipchart, students are introduced to linear equations, substitutions, and graphing linear equations on a coordinate grid system.
Activity
Help Algebra

Help algebra.com: Substitution Method for Systems

For Students 9th - 10th Standards
Using the Substitution Method, a system of equations is solved. The process is shown in detail and can be used as a reference for solving other systems

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