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# Solving Systems by Elimination Part 1 Fall 2013 (Editable)

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Instead of lecturing my students on the concept of solving systems by elimination, as I used to do, I now start class with a mini-lesson (15-20 minutes in length) to go over just the main idea of what they will be learning about today. I include two or three example problems to make sure they get the main idea:

Part 1:
Ex 1: x + y = 22; x – y = 8 (x = 15, y = 7)

Ex 2: y = –3x + 13; 4x + y = 18 (x = 5, y = –2)

Ex 3: x + y = 4; –x –y = 5; (FALSE: no solutions)

As soon as the mini-lesson is over, I set them to task on this worksheet. I use this activity within cooperative groups, and I circulate to make sure they are getting the purpose of the questions.

The file includes spiral review problems.

I expect my students to show their work on a separate sheet of graph paper for this assignment.

Please download the pdf preview file first, so you can see exactly what's included; the product file is a word document, which you may personalize for your students.

Immediately before this worksheet, I use the worksheet named 'Solving Systems of Equations by Substitution Fall 2013' (http://www.teacherspayteachers.com/Product/Solving-Systems-of-Equations-by-Substitution-Fall-2013-1125143), and immediately after this worksheet, I use the worksheet named 'Solving Systems by Elimination Part 2 Fall 2013' (http://www.teacherspayteachers.com/Product/Solving-Systems-by-Elimination-Part-2-Fall-2013-1125129)

Keywords: Jonnard
Total Pages
1 page
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Teaching Duration
1 hour
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