## Seeing Structure in Expressions Week 2- Elementary Connections - How the building blocks of these standards are introduced in elementary school

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.

Connected Skill 1: The Distributive Property.

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: Dreambox- Complete Multiplication with Open Arrays Lesson

Click on the image to open to the complete Dreambox lesson on using the Multiplication with Open Areas teacher tool.

(While most Dreambox features require a subscription, all of the resources on the Dreambox Teacher Tools website are free.)

Connected Skill 2: Skip Counting

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.’

Connected Skill 3: The Commutative Property

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.’

Lesson and Video: Learnzillion- Using Addition and Subtraction to Solve for an Unknown

Click on the image to open the Learnzillion video lesson and associated materials for solving for an unknown in an addition or subtraction equation by using related facts and the properties of addition and subtraction.

Connected Skill 4: Making Tens

Free Practice Resource: Dreambox Lesson on Making Ten

Click on the image to open a PDF of a Dreambox lesson on matching pairs of numbers to make ten. This lesson includes a teacher tool interactive game.

(While most Dreambox features require a subscription, all of the resources on the Dreambox Teacher Tools website are free.)

Connected Skill 5: Addition and Subtraction on a Number Line

Free Practice Resource: Dreambox Lesson- Using Landmark Numbers to Add on the Open Number Line

Click on the image to open to the complete Dreambox lesson on for using landmark numbers to help with adding on a number line..

(While most Dreambox features require a subscription, all of the resources on the Dreambox Teacher Tools website are free.)