## Free Resources for Algebra- Expressions and Equations- Unpacking the Standards - Common Misunderstandings Related to Vocabulary and Representation

CCSS.MATH.CONTENT.HSA.SSE.A.1.A: Interpret parts of an expression, such as terms, factors, and coefficients. CCSS.MATH.CONTENT.HSA.SSE.A.2: Use the structure of an expression to identify ways to rewrite it.

Misunderstanding 1: What does the coefficient represent?

Click on the following images to find an example video, a manipulative/ visual representation that can be used when practicing with this skill, and a free practice resource that highlights the ‘whY.’

Misunderstanding 2: What are ‘like’ terms?

Click on the following images to find an example video, a manipulative/ visual representation that can be used when practicing with this skill, and a free practice resource that highlights the ‘whY.’

Free Practice Resource: Desmos- Polygraph- Introduction to Algebra Tiles

Click on the image to open a Polygraph- Introduction to Algebra Tiles game (created by Jessica Borah).

For more information on ‘Polygraph,’ click on ‘learn more.’ (You will need to create a free teacher account on Desmos in order to use this resource.)

Misunderstanding 3: Expressions vs. Equations

Click on the following images to find an example video, a manipulative/ visual representation that can be used when practicing with this skill, and a free practice resource that highlights the ‘whY.’

Free Practice Resource: Open Up Resources- Lesson on Using Diagrams to Model Equivalent Expressions

Click on the image to open to the complete Open Up Resources lesson on using diagrams to model equivalent expressions.

(You will need to create a free teacher account on Open Up in order to use this resource.)

Misunderstanding 4: Exponents Represent Repeated Multiplication

Misunderstanding 5: Multiplying Binomials

Manipulative: Algebra Tiles iPad app by Braincamp

Search “Algebra Tiles” by Braincamp, LLC on your iPad App Store to access the above app. It’s a paid app ($1.99), but it is much more user friendly when multiplying binomials.

If you would like a free tool that can also be used to multiply binomials, use the NCTM Algebra Tiles link above and click on ‘expand.’

Free Practice Resource: Desmos- Area- Multiplying Polynomials

Click on the image to open an Area- Multiplying Polynomials investigation (created by Andrew Stadel).

For more information on the lesson, click on ‘teacher’s guide.’ (You will need to create a free teacher account on Desmos in order to use this resource.)