Oak Ridge National Laboratory
Ornl: 7 Gaussian Elimination on Band Matrices
This site gives an example of solving a system of equations with the use of Gaussian Elimination.
Texas Instruments
Texas Instruments: Getting Started With the Ti Navigator System: River of Life
This lesson introduces students to Activity Center and is intended to help students develop the conceptual understanding of how to identify functions as linear or nonlinear and contrast their properties from tables, graphs, or equations.
Khan Academy
Khan Academy: Systems of Equations With Elimination
Solve systems of equation with one-step elimination (e.g., x-values or y-values cancel each other out).
Khan Academy
Khan Academy: Systems of Equations With Elimination Challenge
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).
Interactive Mathematics
Interactive Mathematics: Graphs of Linear Functions
A brief overview of three methods used to graph lines is presented through examples. Slope-intercept, point-slope, and intercept form are demonstrated step-by-step along with a review of the formula for finding the slope of a line.
ClassFlow
Class Flow: Applications Using Systems
[Free Registration/Login Required] This flipchart provides guided practice with word problems involving systems of equations and gives a brief review on solving systems of equations.
Other
University of Wisconsin: Basic Algebra
This college site offers a variety of problems and answers. Problems are divided into topic areas for easy access. Also offers quizzes with each topic.
![Houghton Mifflin: Math Graphs: Elimination Method 16 [Pdf] Unknown Type](https://d15y2dacu3jp90.cloudfront.net/images/attachment_defaults/resource/large/FPO-knovation.png "Houghton Mifflin: Math Graphs: Elimination Method 16 [Pdf] Unknown Type")
Math Graphs
Houghton Mifflin: Math Graphs: Elimination Method 16 [Pdf]
Learners identify the graphs of a system of linear equations and then solve the system. The practice exercise is available in PDF format.
Math Graphs
Houghton Mifflin: Math Graphs: Elimination Method 17 [Pdf]
Learners solve a system of linear equations using the elimination method. The practice exercise is available in PDF format.
Khan Academy
Khan Academy: Welcome to Rendering!
In this topic we are going to explore how pixels are painted by solving systems of linear equations. It includes two lessons: Lesson 1: Rendering 101 (Grades 5+) and Lesson 2: Mathematics of Rendering (Grades 9+).
Math Graphs
Houghton Mifflin: Math Graphs: Elimination Method 13 [Pdf]
The practice exercise has learners solve a system of linear equations and identify the graphs of the equations. The graphs are available in PDF format.
Math Graphs
Houghton Mifflin: Math Graphs: Elimination Method 14 [Pdf]
The practice exercise has learners solve a system of linear equations and identify the graphs of the equations. The graphs are available in PDF format.
Math Graphs
Houghton Mifflin: Math Graphs: Elimination Method 15 [Pdf]
Learners identify the graphs of a system of linear equations and then solve the system. The practice exercise is available in PDF format.
Illustrative Mathematics
Illustrative Mathematics: A ced.a.3: Dimes and Quarters
This task requires students to recognize the pairs of linear equations in two variables that would be used to solve a given system of equations. Aligns with A-CED.A.3.
Math Graphs
Houghton Mifflin: Math Graphs: Elimination Method 27 [Pdf]
Students use the elimination method to solve simultaneous equations. The exercise is available in PDF format.
Math Graphs
Houghton Mifflin: Math Graphs: Elimination Method 28 [Pdf]
Students use the elimination method to solve simultaneous equations. The exercise is available in PDF format.
National Council of Teachers of Mathematics
Nctm: Figure This: Math Challenges for Families
Students, teachers, and parents alike will enjoy this challenging math site. It contains a clever brain teaser section plus creative problems related to algebra, geometry, measurement, numbers, statistics, and probability. A Spanish...
Illustrative Mathematics
Illustrative Mathematics: A Rei Pythagorean Triples
This task has two separate goals: the first is to solve a pair of equations, one quadratic and the other linear. The second goal is to observe that a point that lies on a circle gives rise to a Pythagorean triple. Aligns with A-REI.C.7.
Wolfram Research
Wolfram Math World: Line
This MathWorld site gives Euclid's definition of a line, properties of lines, common terminology, and algebraic representations of lines and their distinctive parts in a cartesian system. The site then goes into detail of different line...
Illustrative Mathematics
Illustrative Mathematics: A rei.c.6: Estimating a Solution via Graphs
The purpose of this task is to give students an opportunity use quantitative and graphical reasoning to detect an error in a solution. Aligns with A-REI.C.6.
PBS
Pbs Learning Media: Meadows or Malls?
The lesson plan investigates how to use matrices to solve a complex linear programming problem. Educators can download printable version of the activity in pdf format.
Khan Academy
Khan Academy: Precalculus: Matrix Row Operations
Determine the matrix that is the result of performing a specific row operation on a given matrix. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
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...
Stefan Warner and Steven R. Costenoble
Finite Mathematics & Applied Calculus: Review Exercises: Markov Processes
Students review Markov processes. The resource consists of review exercises on the mathematics concepts.