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Using LCD to solve rational equations with fractions and decimals

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The Allman Files
The Allman Files
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5 pages, aligned with common core standards. This student-guided lesson/activity demonstrates how to use the lowest common denominator of a set of fractions (or decimals) to solve algebraic equations that may seem daunting because they are riddled with fractions or decimals. Underlying the content is a theme of thinking and reasoning about what makes one solution more elegant than another.

The lesson includes guided questions, instruction, and practice, as well as a worked out teacher's answer guide. I also include a cover page with rationale, essential questions, objectives, standards alignment, and teacher notes.

This is NOT an introduction to lowest common denominators and assumes a basic understanding of LCD and how to find them.

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K-12 Subject:
Grade Level(s):
Teaching Duration:
40 Minutes 
Answer Key:
N/A
# of Pages/Slides:
5
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Using LCD to solve rational equations with fractions and decimals
Using LCD to solve rational equations with fractions and decimals
Using LCD to solve rational equations with fractions and decimals
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1867.53 KB | 5 Pages
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I've taught high school mathematics in many settings: public, private, urban, suburban, and rural. I have also worked in an instructional and editorial capacity for Pearson Education. I've benefited from the leadership of some extraordinary mentors throughout my career and I look forward to sharing my expertise with you.

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Thumbnail 1Using LCD to solve rational equations with fractions and decimals
Thumbnail 2Using LCD to solve rational equations with fractions and decimals
Thumbnail 3Using LCD to solve rational equations with fractions and decimals
ThumbnailAlgebra Performance Task: Multistep Equations with Tables