## Reflection: Developing a Conceptual Understanding Connecting Expressions to Area - Section 3: Matching Activity

When students worked on this portion of the lesson I made some really interesting observations.  First, I noticed that some students struggled with the area model because they didn't see the area as being the product of the length and width.  Once students were able to make this connection they could connect the area models to the various algebraic expressions.  My second noticing was about the tables.  I was thrilled how quickly students were able to make meaning of the tables and how they connected to the expressions.  The whole idea of "input and output" is extremely important to building the concept of functions.  Students very quickly noticed that the independent values could be plugged in for the variable in each expression and the result was the dependent variable.  Some students even commented that "those were the easiest to match up."  This also gave me some time to observe students arithmetic skills when substituting values into each expression.

Making Meaning
Developing a Conceptual Understanding: Making Meaning

# Connecting Expressions to Area

Unit 9: Understanding Equations
Lesson 4 of 15

## Big Idea: Students form a concept image by representing area as the product of binomial factors.

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40 minutes

### James Bialasik

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