demonstrate understanding of area and perimeter formulas by solving multi-step real world problems...
TRANSCRIPT
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Demonstrate understanding of area and perimeter
formulas by solving multi-step real world problems
Lesson 3.3:
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Find the Area and Perimeter Fluency
• Find the perimeter and area
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Find the Area and Perimeter Fluency
• Find the missing side
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Guided Instruction Concept DevelopmentRDW Process
Read• Read the problem.• Highlight or underline important information
Draw• Draw a picture, tape diagram, number line, a number
bond, a table or a chart to illustrate the problem.• Show the computation.
Write• Write an equation.• Write a an answer to the question asked in the problem.
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Guided Instruction Concept DevelopmentProblem 1
• The projection screen in the school auditorium is 5 times as long and 5 times as wide as the screen in the library. The screen in the library is 4 feet long with a perimeter of 14 feet. What is the perimeter of the screen in the auditorium?
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Guided Instruction Concept DevelopmentProblem 1
• Solution
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Guided Instruction Concept DevelopmentProblem 2
• The width of David’s tent is 5 feet. The length is twice the width. David’s rectangular air mattress measures 3 feet by 6 feet. If David puts the air mattress in the tent, how many square feet of floor space will be available for the rest of his things?
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Guided Instruction Concept DevelopmentProblem 2
• Solution
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Guided Instruction Concept DevelopmentProblem 3
• Jackson’s bedroom has an area of 90 square feet. The area of his bedroom is 9 times that of his closet. If the closet is 2 feet wide, what is its length?
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Guided Instruction Concept DevelopmentProblem 3
• Solution
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Guided Instruction Concept DevelopmentProblem 4
• The length of a rectangular deck is 4 times its width. If the deck’s perimeter is 30 feet, what is the deck’s area?
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Guided Instruction Concept DevelopmentProblem 4
• Solution 1
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Guided Instruction Concept DevelopmentProblem 4
• Solution 4
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Exit Ticket
• Solve the following problem. Use pictures, words, or diagrams to help you solve.
• 1. A poster is 3 times as long as it is wide. A banner is 5 times as long as it is wide. Both the banner and the poster have perimeters of 24 inches. What are the length and width of the poster and the banner?
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Math Logs
•When do we use twice as much, 2 times as many, or 3 times as many? When have you heard that language being used?