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Published byMichael Corey Wheeler Modified over 9 years ago
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FINDING THE AREA OF A RECTANGLE SWBAT use the area formula for rectangles to solve real world problems.
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What is area? Take 1 minute to write: What is area? What does the word mean? When have you seen it before? Define in your own words. Area: The size of a surface. The amount of space inside the boundary of a flat object such as a rectangle or a triangle.
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How are area and perimeter different? Area is the space inside a 2 dimensional shape. Perimeter is the distance around the shape. Example on board
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Area of a Rectangle To find the area of a rectangle, we multiply the length times the width. In the rectangle shown, we have dimensions of 5 x 8. Area means the amount of squares it takes to cover the flat surface. In this case, it takes 40. (We also know that 5 x 8 = 40) This rectangle has an area of 40 units 2
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Find the area Find the area of the following rectangles. 9 units 3 units 12 units 2 units 5 units 27 sq units 24 sq units 25 sq units
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Turn and talk With the person sitting next to you, come up with 3 real world examples of when we could need to calculate area. Be prepared to share. You have 5 minutes.
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Independent Practice
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Exit Ticket 1. What is the area of a rectangle with dimensions of 7.5 and 4? 2. Explain how to find area. 3. Which of the following is NOT an area problem. A) Paul is painting a wall with dimensions of 9 x 12. How much paint will he need? B) Tina’s yard is 25 feet by 30 feet. How much fencing will she need to fence in her yard? C) Randy is getting new carpeting. If his room is 13 feet wide and 24.5 feet long, how much carpeting will he need?
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