Unit 4 Geometry Unit 4 A Geometric Figures

Lesson 4: Scale Drawings Objective: Swbat find the measurements on a scale drawing. Do

Lesson 4: Scale Drawings Definitions Scale models are used to represent objects that are

Lesson 4: Scale Drawings Stratgey: Use a proportion Scale Map Actual Length Map Actual

Lesson 4: Scale Drawings Example 1: The scale on a map of Maryland is

Lesson 4: Scale Drawings Try It! The scale on a map of Arkansas is

Lesson 4: Scale Drawings Example 2: A graphic artist is creating an advertisement of

Lesson 4: Scale Drawings Try It! A scooter is 3. 5 feet long. Find

Lesson 4: Scale Drawings Example 3: Find the scale factor of a model sailboat

Lesson 4: Scale Drawings Try It! What is the scale factor of a model

Lesson 4: Scale Drawings Real-World Problem 1. 5 inches Master Bedroom M 1 inch

Classwork • Guided Practice #1 - 4 • Independent Practice # 1 - 5

Closure Question: What strategy can be used to find measurements on a scale drawing?

Exit Ticket An engineer makes a model of a bridge using a scale of

Slides: 15

Download presentation

Unit 4 Geometry Unit 4 A Geometric Figures Lesson 4 Scale Drawings

Lesson 4: Scale Drawings Objective: Swbat find the measurements on a scale drawing. Do Now: Quick Check

Lesson 4: Scale Drawings Definitions Scale models are used to represent objects that are too large or too small to be drawn or built at actual size. Scale gives the ratio that compares the measurements of the drawing or model to the measurements of the real object. Scale factor is a ratio written without units in simplest form.

Lesson 4: Scale Drawings Stratgey: Use a proportion Scale Map Actual Length Map Actual

Lesson 4: Scale Drawings Example 1: The scale on a map of Maryland is 1 cm = 24 miles. The map distance between Hagerstown and Annapolis is 4 cm. What is the actual distance?

Lesson 4: Scale Drawings Try It! The scale on a map of Arkansas is 1 cm = 20 miles. The map distance between Clarksville and Little Rock is 5 cm. What is the actual distance?

Lesson 4: Scale Drawings Example 2: A graphic artist is creating an advertisement of a cell phone. The scale is 5 in. = 1 in. If the cell phone is actually 4 in. in length, what is the length of the cell phone on the advertisement?

Lesson 4: Scale Drawings Try It! A scooter is 3. 5 feet long. Find the length on the model of the scooter if the scale is 1 in =. 75 feet.

Lesson 4: Scale Drawings Example 3: Find the scale factor of a model sailboat if the scale is 1 inch = 6 feet.

Lesson 4: Scale Drawings Try It! What is the scale factor of a model car if the scale is 1 inch = 2 feet?

Lesson 4: Scale Drawings Real-World Problem 1. 5 inches Master Bedroom M 1 inch Scale: 1 in. = 12 ft. Find the actual area of the bedroom (sq. ft)

Classwork • Guided Practice #1 - 4 • Independent Practice # 1 - 5 • Problem Solving Practice # 1 -6

Closure Question: What strategy can be used to find measurements on a scale drawing? Exit Ticket Homework: Practice # 1 - 9

Exit Ticket An engineer makes a model of a bridge using a scale of 1 in = 3 yards. The actual length of the bridge is 50 yards. What is the length of the model?

Homework