Unit 7, Lesson 11-- Connecting Area to Multiplication

Lesson 11-- Connecting Area to Multiplication

Introduction

Hello Mathematicians! Today we will learn how our knowledge of multiplication can help us to find the area of rectangles.

Take a look at this image.  Which shape has the greatest shaded area? Jot down your thoughts in your math notebook.

How about now?  Which shape has the greatest shaded area?  How can you prove it?  Share your thinking in the discussion on the Next page.

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Video

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Interactive

Directions:

• Practice finding area using multiplication in the interactive below.

 

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In Your Math Notebook:

Let’s get out our math journals and  work through the following application problem. Make sure you read the problem carefully, draw a picture to match your thinking and write and solve an equation.

Read, Draw, Write. DONE!

R (Read the problem carefully.) Sarah wants to paint a wall in her bedroom. She has enough paint to cover 70 square feet. If her wall is 9 feet long and 8 feet high, will she have enough paint? Explain your thinking with pictures, numbers, and words.  D (Draw a picture.) W (Write and solve an equation.)

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Georgia Department of Education, Math