G.6.Pre-5.1
Let's take a look at the area model example below. You probably saw something like this in elementary or middle school.
In algebra 1 we use the area model in our quadratics unit...but because of Covid some of you may not have learned it, so we're doing a mini lesson today.
You definatly know how to find area of rectangle: length x width. We use area of a rectangle as a model for multiplying 2 numbers together.
We don't know the answer to 27 x 35 in our head, but we can think of those as the dimensions of a rectangle and then decompose 27 into 20 + 7 and 35 into 30 + 5.
What do you notice? What do you wonder?
Area model of (x + 4)(x + 4) = x² + 8x + 16