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Lesson Plan
PBS

Pbs Mathline: Stressed to the Breaking Point Lesson Plan [Pdf]

For Teachers 9th - 10th
Students explore how much weight a spaghetti bridge can support and whether width and length matter. Printable lesson.
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Unit Plan
Texas A&M University

Wtamu Virtual Math Lab: Solving Systems of Linear Equations in Three Variables

For Students 9th - 10th Standards
This tutorial will show you how to solve a system of linear equations in three variables by using the elimination method. Complete with definitions, example problems with step-by-step solutions, and practice exercises for you to complete...
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Handout
Math Planet

Math Planet: Algebra 2: Solving Systems of Equations in Three Variables

For Students 9th - 10th Standards
Get information about solving systems of equations in three variables by viewing examples and a video lesson. [6:35]
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Lesson Plan
Illustrative Mathematics

Illustrative Mathematics: A Rei Pairs of Whole Numbers

For Teachers 9th - 10th
The premise of this problem is simple - students must find three whole numbers with three different sums when they are added in pairs. To do this, they set up a system of linear equations in three variables. Aligns with A-REI.C.6.
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PPT
Sophia Learning

Sophia: Equations for the Circle: Lesson 3

For Students 9th - 10th Standards
This lesson presents the standard form and the general form for the equation of a circle, and relates the two. It is 3 of 5 in the series titled "Equations for the Circle."
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Unit Plan
Sophia Learning

Sophia: Equations for the Circle: Lesson 5

For Students 9th - 10th
This lesson presents the standard form and the general form for the equation of a circle, and relates the two. It is 5 of 5 in the series titled "Equations for the Circle."