Unit Plan
Mangahigh

Mangahigh: Algebra: Solve Systems of Equations Substitution Method

For Students 9th - 10th Standards
Students watch an online tutorial on the concept of solving systems of equations using the substitution method. After watching, students test their knowledge by attempting ten practice problems that increase or decrease in difficulty...
Article
Khan Academy

Khan Academy: Substitution Method Review (Systems of Linear Equations)

For Students 7th - 9th
This article will take you through a step-by-step approach for solving a systems of linear equations. Article also includes practice questions.
Unit Plan
CK-12 Foundation

Ck 12: Algebra: Comparing Methods for Solving Linear Systems

For Students 9th - 10th Standards
[Free Registration/Login may be required to access all resource tools.] Decide which method is the best one to use to solve a system of linear equations.
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
Unit Plan
Texas A&M University

Wtamu Virtual Math Lab: Intermediate Algebra

For Students 9th - 10th
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,...
Unit Plan
Texas Education Agency

Texas Gateway: Solving Systems of Equations Using Substitution

For Students 9th - 10th Standards
Given a system of two equations where at least one of the equations is linear, the student will solve the system using the algebraic method of substitution.
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Wyzant

Wyzant: Algebra Help

For Students 9th - 10th Standards
Heres a comprehensive review of the basics of algebra. WyzAnt includes lessons on varied topics, calculators that show step-by-step solutions, and interactive worksheets for practicing and testing your skills. Just choose a topic and use...
Activity
Texas Instruments

Texas Instruments: Systems of Linear Equations Using Substitution

For Teachers 9th - 10th Standards
Students can use the substitution method of solving systems of linear equations.
Activity
J Coffman

Joseph Coffman's Lecture Notes: Solving Systems of Equations Algebraically

For Students 9th - 10th Standards
The lesson explores solving systems of equations algebraically. Topics discussed are the elimination method, substitution method, addition property, and special cases. Examples with detailed solutions and an assessment are included.
Activity
Lawrence Hall of Science

The Math Page: Skill in Algebra: Simultaneous Linear Equations

For Students 9th - 10th Standards
Here is a site that clearly and thoroughly explains how to solve systems of linear equations using the methods of combination, substitution, and Cramer's Rule. There are example problems solved, problems for the student to attempt, and...
Unit Plan
CK-12 Foundation

Ck 12: Algebra: Mixture Problems

For Students 9th - 10th
[Free Registration/Login may be required to access all resource tools.] Solve problems that deal with a mixture of two things using the substitution method.
Activity
Interactive Mathematics

Interactive Mathematics: Solving Systems Algebraically

For Students 9th - 10th Standards
Both the substitution and elimination methods are presented through detailed examples. Learn step by step how to find solutions to any linear system of two variables.
Activity
Other

Algebra.com: Linear Equation and System Solvers: Solve Linear Systems

For Students 9th - 10th Standards
This interactive linear system solver allows you to enter two linear equations in general form and then plot the lines and find the answer using either substitution or elimination. The answer is presented with both methods accompanied by...
Activity
Interactive Mathematics

Interactive Mathematics: Algebraic Solutions of Systems

For Students 9th - 10th Standards
Nonlinear systems are solved using the algebraic methods of substitution and addition/subtraction. Learn how these methods work through detailed examples.
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McGraw Hill

Glencoe Mathematics: Quiz on Solving Systems of Linear Equations

For Students 9th - 10th Standards
Learners show comprehension of advanced mathematical concepts in Algebra II. The questions check understanding on solving systems of linear equations. Topics include solving systems using graphing, substitution, and elimination methods.
Unit Plan
Oswego City School District

Regents Exam Prep Center: Systems of Linear Equations

For Students 9th - 10th
This website contains tutorials that cover the methods used to solve linear equations, substitution, elimination (adding & subtracting), and graphing. The practice pages allow students to practice the skills they have learned. On the...
Activity
Texas Instruments

Texas Instruments: Linear Systems: Using Algebra

For Teachers 9th - 10th Standards
Students learn to solve a system of linear equations (2 equations with 2 variables) by substitution and elimination methods. They also review the definitions of consistent (independent and dependent) and inconsistent systems, and...
Activity
Other

All Elementary Mathematics: Trigonometric Equations

For Students 9th - 10th
This site gives a definition for what a trigonometric equation is, gives a listing of the simplest trigonometric equations, and lists seven main methods of solution of trigonometric equations with examples.
Lesson Plan
Alabama Learning Exchange

Alex: Battleships

For Teachers 9th - 10th
This lesson is designed to review and reinforce three methods (graphing, substitution and elimination) of solving systems of linear equations. The students will work together and independently to find the solutions to systems of...