Lesson 6-3 Pages 276-280

# Lesson 6-3 Pages 276-280

## Lesson 6-3 Pages 276-280

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##### Presentation Transcript

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