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Interactive Mathematics
Interactive Mathematics: Matrices and Linear Equations
Examples are provided to demonstrate how to use matrices to solve 2x2 and 3x3 matrices. Examples include real world applications and some are interactive.
ClassFlow
Class Flow: Solving Systems Using Elimination
[Free Registration/Login Required] This flipchart shows students how to solve systems of linear equations using elimination.
Alabama Learning Exchange
Alex: Focusing on Graphs
In this lesson, students will solve systems of linear equations by graphing. Systems of linear equations are two or more linear equations together.
Alabama Learning Exchange
Alex: When Will Mr. "X" Meet Miss "Y"?
During this lesson, students will solve systems of equations graphically. Students will graph various equations individually using graphing paper. They will work with a partner to solve several system of equation problems and then graph...
Alabama Learning Exchange
Alex: Battleships
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...
Illustrative Mathematics
Illustrative Mathematics: A Rei the Circle and the Line
Students are required to solve a system of equations in this task which will demonstrate their understanding of the correspondence between intersection points of the two graphs and solutions of the system. Aligns with A-REI.C.7.
CK-12 Foundation
Ck 12: Algebra: Solving Problems by Factoring
[Free Registration/Login may be required to access all resource tools.] Apply quadratic factoring techniques to solve real-world problems.
Alabama Learning Exchange
Alex: Wild Water Adventure
Students will learn how a system of equations can be used to find the best use of information to make decisions in real-world situations.Students will work in groups of 3s or 4s to develop a system for the best buy on tickets at a water...
Cool Math
Coolmath: Systems of Equations Solving by Substitution
Reference material and practice problems solving by substitution.
CK-12 Foundation
Ck 12: Precalculus Concepts 2.0
A complete high school Precalculus Concepts course. Includes 'Related Modalities' for each lesson that teach the same concept in different ways. The text materials follows Algebra II and comes before Calculus or Statistics. The content...
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.
CK-12 Foundation
Ck 12: Algebra: Linear Inequalities in Two Variables
[Free Registration/Login may be required to access all resource tools.] Graph linear inequalities to find solutions.
CK-12 Foundation
Ck 12: Algebra: Linear Programming
[Free Registration/Login may be required to access all resource tools.] Given a set of constraints, graph and solve linear problems.
Other
Hsor.org: Cutting Times: Trimming Losses
Use this lesson plan to have students explore systems of inequalities.
TeachEngineering
Teach Engineering: The Balancing Act
Students are given the opportunity to visualize and interact with concepts they have already learned, specifically algebraic equations and solving for unknown variables. Students construct a balancing seesaw system (LEGO Balance Scale)...
Ministry of Education and Universities of the Region of Murcia (Spain)
Ministerio De Educacion Y Ciencia: Sistemas De Ecuaciones Lineales
In Spanish. Learn the algebraic language to represent and solve systems of two linear equations with two unknowns.
Other
Math Portal: Row Reduction Method
A step by step of how to solve systems of linear equations using the row reduction method.
Cuemath
Cuemath: How to Solve Matrices
In this mini-lesson plan, we will explore the world of matrices by finding the answers to questions like how to solve systems of equations with matrices, how to solve matrices, and matrix operations with examples and formulas while...
Texas Instruments
Texas Instruments: Elimination
This activity uses geometric examples to illustrate the method of elimination to obtain a Cartesian equation using the Computer Algebra System CAS tool.
Texas Instruments
Texas Instruments: Matrices Using Cas
This Computer Algebra System (CAS) activity encourages students to perform basic arithmetic operations on matrices, and solving a set of equations using CAS.
Cool Math
Coolmath: 2 X 2 Determinants Cruncher
Practice problems that include determinants and Cramer's Rule for 2x2 systems.
PBS
Pbs Mathline: Stressed to the Breaking Point Lesson Plan [Pdf]
Students explore how much weight a spaghetti bridge can support and whether width and length matter. Printable lesson.
Texas Instruments
Texas Instruments: Boats in Motion
In this lesson, students make observations about the motion of a boat going up and down the river. They will solve the system of equations algebraically and graphically.
Illustrative Mathematics
Illustrative Mathematics: A rei.c and a rei.a.1: Products and Reciprocals
The purpose of this task is to test student skills at converting verbal statements into two algebraic equations and then solving those equations. Aligns with A-REI.A.1 and A-REI.C.