Lesson 4 - Introduction to Area #4

[One speaker] 

[questioni: A dollar bill that is rectangular in shape has a length of 6 in and a width of 3 in. Find the area of the rectangle defined by this dollar bill.]

Narrator: [reads question]  So let’s start by visualizing our dollar bill. [dollar bill appears on the screen] So here’s our dollar bill and we know it has a length of six inches, and a width of three inches. Now let’s break it apart so that we can see all the units within that dollar. So here we can see that we divided our length into six pieces or six inches. One, two, three, four, five, six. And our width into three inches, one, two, three. We know that our area is equal to the length times the width. [area=l x w]  In this case we have six inches times three inches. And six times three is 18, and inches times inches will give us inches squared. So we know our area is 18 inches squared. And if we were to count these squares in here, we can see that we end up with 18 inches squared.

[End of video]