Curated OER
The Why and How of General Terms
Sixth graders find the recurrence relation for simple sequences
construct tables of values for a pattern. They find the value of the general term of a sequence algebraically.
Curated OER
I'm So Sorry I Ate Chocolate
Sixth graders investigate the magnitudes of the sides and angles of a triangle. They determine the proof of the Sine Rule before using it to solve triangles. They compare the Sine Rule to the Cosine Rule in this unit of lessons.
Curated OER
The Old Chicken Run Problem
Sixth graders apply problem solving strategies to work with a real life situation in which they need to determine the area. They determine the area of chicken runs that are rectangular in shape when give a partial perimeter.
Curated OER
Polygonal Strings
Sixth graders apply knowledge of how to calculate the area and perimeter of triangles. They determine why it is inappropriate to measure the area of land by its perimeter which is done in certain areas of New Guinea. They complete a...
Curated OER
La Toteca- A Tropical Paradise
Students collect data on the time of the ferry. In this algebra instructional activity, students use the data to predict a ferry schedule. They also compute the depth where oxygen would be needed when diving.
Curated OER
Squirt
Fourth graders using the idea of "how many more squirts" fill a container to develop multiplicative thinking. They also investigate the idea of conservation of volume when working with oddly shaped containers. They attempt to use...
Paul Dawkins
Paul's Online Notes: Algebra: Systems of Equations
Learners examine how to solve systems of equations. Topics investigated are linear systems with two variables, linear systems with three variables, augmented matrices, and nonlinear systems. Class notes, definitions, and examples with...
Math Planet
Math Planet: Algebra 2: Solving Systems of Equations in Two Variables
Provides examples and a video lesson that illustrate how to solve systems of equations in two variables. [1:43]
CK-12 Foundation
Ck 12: Algebra: Linear Systems With Multiplication
[Free Registration/Login may be required to access all resource tools.] Solve linear systems using multiplication.
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: Linear Systems: Using Graphs and Tables
Students learn to locate the real number solution of a system of linear equations (two equations and two variables) with the help of tables and graphs. They also learn to graphically illustrate the types of solutions expected for a...
Texas A&M University
Wtamu Virtual Math Lab: College Algebra: Systems of Linear Equations in Two Var.
This tutorial will guide you through several tasks associated with systems of linear equations in two variables. Complete with definitions, problems with step-by-step solutions, and example exercises for you to complete and check.
Cuemath
Cuemath: Linear Equations in Two Variables
A comprehensive guide for learning all about linear equations in two variables with definitions, how to solve them, solved examples, and practice questions.
Other
Stony Brook University: Solving Linear Equations
The name linear comes from the fact that such an equation in two unknowns or variables represents a straight line. A set of such equations is called a system. This site explains all this and more.
Oswego City School District
Regents Exam Prep Center: Linear Quadratic Systems
Resources to use when planning instruction on linear-quadratic systems. Find lessons on solving systems algebraically and graphically, a practice quiz with solutions, and a worksheet through which students investigate and solve systems.
CK-12 Foundation
Ck 12: Algebra: Linear Systems With Addition or Subtraction
[Free Registration/Login may be required to access all resource tools.] This lesson covers solving a system by adding the two equations together to eliminate a variable.
Oswego City School District
Regents Exam Prep Center: Solving Linear Systems Graphically
The method of graphing to solve a system of linear equations is demonstrated on this site. Students are shown how to graph the lines, then shown how to find the solution.
Texas Instruments
Texas Instruments: Linear Systems: Using Algebra
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...
Math Medics
S.o.s. Math: Systems of Equations in 2 Variables
Discusses how to solve systems of equations in two variables by reviewing ans showing examples of the four methods of solving linear equations: substitution, elimination, matrices, and graphing.
Stefan Warner and Steven R. Costenoble
Finite Mathematics & Applied Calculus: Systems of Two Linear Equations in Two Unknowns
The tutorial examines systems of two linear equations in two unknowns. Students learn about the concepts through class notes, examples, and practice problems. Topics include elimination method, infinitely many solutions, and no...
Math Planet
Math Planet: Algebra 1: Graphing Linear Systems
Gain an understanding of how to solve linear equations by viewing an example and a video lesson. [3:01]
Texas Education Agency
Texas Gateway: Formulating Systems of Inequalities
Given a contextual situation, the student will formulate a system of two linear inequalities with two unknowns to model the situation.
Texas Education Agency
Texas Gateway: Solving Systems of Equations With Algebraic Methods
Given verbal and/or algebraic descriptions of situations involving systems of two-variable linear equations, the student will solve the system of equations by different methods.
Stefan Warner and Steven R. Costenoble
Finite Mathematics & Applied Calculus: Topic Summaries: Systems of Linear Equations and Matrices
The topic summary outlines systems of linear equations and matrices. Some topics reviewed are linear equations in two unknowns, augmented matrix, and Gauss Jordan row reduction. The resource consists of definitions, notes, and examples.