Illustrative Mathematics
Illustrative Mathematics: A rei.c.6: Accurately Weighing Pennies I
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.
CK-12 Foundation
Ck 12: Algebra: Families of Lines
[Free Registration/Login may be required to access all resource tools.] Learn how to express families of linear equations.
Texas Instruments
Texas Instruments: Glencoe Algebra 2: Augmented Matrices
Students will solve systems of linear equations.
Illustrative Mathematics
Illustrative Mathematics: A Rei Quinoa Pasta 2
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...
Richland Community College
Richland Community College: Math 116 Lecture Notes
This site from the Richland Community College provides the detailed lecture notes to a college algebra course, complete with equations and definitions. Content ranges from "functions and their graphs" to "conics and parametric equations."
Purple Math
Purplemath: Cramer's Rule
Cramer's Rule for solving a system of equations is presented here using an example of a system in three variables with three equations. The "everything," approach of solving for all three variables is shown as well as the "selective,"...
ClassFlow
Class Flow: Solving Systems Using Elimination
[Free Registration/Login Required] This flipchart shows students how to solve systems of linear equations using elimination.
Sophia Learning
Sophia: Using Elementary Row Operations to Solve for Systems of Equations
This lesson presents how to use elementary row operations to solve for a system of linear equations.
Illustrative Mathematics
Illustrative Mathematics: A rei.c.7 & a rei.d.10: A Linear and Quadratic System
The purpose of this task is to give students the opportunity to make connections between equations and the geometry of the graphs. Aligns with A-REI.C.7and A-REI.D.10.
Texas Instruments
Texas Instruments: Solving Systems of Equations: The Method of Elimination
Whenever a system of n equations with n unknowns is given there are several methods that can be used to find the solution to the system if a solution exists. In this activity, you will use the method of elimination to solve systems of...
Khan Academy
Khan Academy: Lsn 13: Systems of Equations, Algebraic and Graphical Representations
Lesson 3 of 4 for Passport to Advanced Math. Learners 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...
Texas Instruments
Texas Instruments: Tracing Paper Inequalities
In this activity, students will graph systems of linear inequalities in two variables in the Cartesian coordinate plane and find their solutions.
CK-12 Foundation
Ck 12: Algebra: Linear Inequalities in Two Variables
[Free Registration/Login may be required to access all resource tools.] This lesson covers graphing inequalities in two variables.
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).
Khan Academy
Khan Academy: Constraint Solutions of Systems of Inequalities
Find the range of values of one variable thatcorresponds to a given value of the other variable in a system of two-variable linear inequalities.
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.
Illustrative Mathematics
Illustrative Mathematics: A rei.c.6: Accurately Weighing Pennies Ii
This illustrated math lesson shows how important levels of accuracy in measurement are. The answer can be different since a scale only accurately weighs to the nearest tenth of a gram instead of to the nearest hundredth of a gram. Aligns...
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.
University of Regina (Canada)
University of Regina: Math Central: How to Augment a Matrix
In easy to follow steps, this resource replies to a student's question on how to augment a matrix.
Texas Instruments
Texas Instruments: Numb3 Rs: Set the Trap
Based off of the hit television show NUMB3RS, this lesson shows students a real-world application to matrices and matrix operations. Framed in the context of a stolen painting which the thief may hide at different warehouses, students...
Texas Instruments
Texas Instruments: Numb3 Rs: Matrix Operations
Based off of the hit television show NUMB3RS, this lesson shows students how using matrix multiplication can lead to solving real-world problems. In this situation, a painting is missing and the probability of travel betweek five cities...
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