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Lesson 6-3 Pages 276-280 PowerPoint Presentation
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Lesson 6-3 Pages 276-280

Lesson 6-3 Pages 276-280

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Lesson 6-3 Pages 276-280

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  1. Lesson 6-3Pages 276-280 Scale Drawings and Models Lesson Check 6-2

  2. What you will learn! • How to use scale drawing. • How to construct scale drawings.

  3. Vocabulary

  4. What you really need to know! A scale gives the relationship between the measurements on the drawing or model and the measurements of the real object.

  5. Example 1: A map has a scale of 1 inch = 8 miles. Two towns are 3.25 inches apart on the map. a. What is the actual distance between the two towns?

  6. 1•d = 8•3.25 d = 26 miles

  7. A map has a scale of 1 inch = 8 miles. b. What is the scale factor?

  8. 8 miles must be changed to inches! 8 x 63,360 = 506,880

  9. Example 2: A model car is 4 inches long. The actual car is 12 feet long. What is the scale of the model? 1 inch = 3 feet

  10. Example 3: Sheila is designing a patio that is 16 feet long and 14 feet wide. Make a scale drawing of the patio. Use a scale of 0.5 inches = 4 feet.

  11. 16 feet long and 14 feet wide. 0.5 inches = 4 feet. L = 2 inches W = 1.75 inches

  12. 2 inches 1.75 inches

  13. Page 278-279 Guided Practice #’s 3-7

  14. 15 feet long and 10 feet wide. 0.5 inches = 10 feet. L = 3/4 inch W = 0.5 inch

  15. 3/4 inch 1/2 inch

  16. Read: Pages 276-278 with someone at home and study examples!

  17. Homework: Pages 279-280 #’s 8-20 all #’s 23-44 Skip #25 Lesson Check 6-3

  18. Page 737 Lesson 6-3

  19. Lesson Check 6-3