Common Issues with Linear Equations

Grades 8-12 / Math / Reasoning
CCSS: Math.A.REI.1 Math.A.CED.2 Math.Practice.MP2

Common Core State Standards

Math

Math

A

Algebra

REI

Reasoning with Equations and Inequalities

1

Explain each step in solving a simple equation as following from the equality of numbers asserted at the previous step, starting from the assumption that the original equation has a solution. Construct a viable argument to justify a solution method.

Download Common Core State Standards (PDF 1.2 MB)

Common Core State Standards

Math

Math

A

Algebra

CED

Creating Equations

2

Create equations in two or more variables to represent relationships between quantities; graph equations on coordinate axes with labels and scales.

Download Common Core State Standards (PDF 1.2 MB)

Common Core State Standards

Math

Math

Practice

Mathematical Practice Standards

MP2

Reason abstractly and quantitatively.

Mathematically proficient students make sense of quantities and their relationships in problem situations. They bring two complementary abilities to bear on problems involving quantitative relationships: the ability to decontextualize--to abstract a given situation and represent it symbolically and manipulate the representing symbols as if they have a life of their own, without necessarily attending to their referents—and the ability to contextualize, to pause as needed during the manipulation process in order to probe into the referents for the symbols involved. Quantitative reasoning entails habits of creating a coherent representation of the problem at hand; considering the units involved; attending to the meaning of quantities, not just how to compute them; and knowing and flexibly using different properties of operations and objects.

Download Common Core State Standards (PDF 1.2 MB)
Engaging Students with "Productive Struggle" Series
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Lesson Objective
Solve linear equations in two variables
Length
8 min
Questions to Consider
Why does Ms. Morehead have the students work on the equations individually and then collaboratively?
How does Ms. Morehead decide to group students for the collaborative task?
What do students learn from analyzing another student's work?
Common Core Standards
Math.A.REI.1, Math.A.CED.2, Math.Practice.MP2

Supporting Materials

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  • Common Issues with Linear Equations Transcript

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