= Divide each measure by the GCF, 3. drawing length actual length

Slides:

Advertisements

Similar presentations

Scale Drawings and Scale Models

Advertisements

On a blueprint, the living room is 4 in. by 3 in. The scale is in. = 8 ft. What are the length and width of the actual living room? Scale Models and Maps.

Properties of Proportions 7-2. EXAMPLE 4 Use a scale drawing SOLUTION Maps The scale of the map at the right is 1 inch : 26 miles. Find the actual distance.

Lesson 6.5 Scale Drawings Students will be able to understand ratios and proportions in scale drawings.

EXAMPLE 4 Use a scale drawing SOLUTION Maps The scale of the map at the right is 1 inch : 26 miles. Find the actual distance from Pocahontas to Algona.

Main Idea/Vocabulary scale drawing scale model scale Solve problems involving scale drawings.

Over Lesson 6–5 A.A B.B C.C D.D 5-Minute Check 1 Write a proportion. Then solve. 18 donuts in 3 boxes, 30 donuts in b boxes There are approximately 2.54.

Chapter 5 Ratios, Rates, Proportions

Proportions and Scale Drawings Textbook Pages

What will I learn today? Learn to understand ratios and proportions in scale drawings. Learn to use ratios and proportions with scale.

.. Objectives: Students will be able to:  Understand what scale drawings are.  Find the scale of a drawing  Convert map distances to actual disctances.

Maps and Scale Drawings

Scale Drawings and Maps

Maps & Scale Drawings Pg in the textbook.

Scale Drawings & Scale Models

Scale Drawings & Proportions

3-6 Ratios and Proportions Objective: Students will determine whether two ratios are proportional and solve proportions. S. Calahan 2008.

Lesson 7 MI/Vocab scale drawing scale model scale Solve problems involving scale drawings.

Find Actual Measurements

Holt CA Course 1 5-8Scale Drawings and Scale Models NS1.3 Use proportions to solve problems (e.g., determine the value of N if T =, find the length of.

Scale Drawings and Models

A scale model or scale drawing is an object or drawing with lengths proportional to the object it represents. The scale of a model or drawing is the ratio.

Warm Up Problem of the Day Lesson Presentation Lesson Quizzes.

4-4 Solving Proportions Learn to solve proportions by using cross products.

RATIOS AND PROPORTIONS

Computing Actual Lengths From a Scale Drawing Learning Target I can compute actual lengths in a picture using the scale.

 Two figures are similar if…  1.) Their corresponding angles are congruent  2.) The corresponding sides are PROPORTIONAL!!! 5 in A B C D 4 in 10 in.

Over Lesson 6–6 A.A B.B C.C D.D 5-Minute Check 1 On a floor plan for a new house, the scale is Find the actual length of the master bedroom which is 5.

Holt CA Course 1 5-8Scale Drawings and Scale Models Warm Up Warm Up California Standards California Standards Lesson Presentation Lesson PresentationPreview.

Unit Goals – 1. Solve proportions and simplify ratios. 2. Apply ratios and proportions to solve word problems. 3. Recognize, determine, and apply scale.

On a floor plan of her room, the length of Hailey’s bed is 3 inches. If the scale of her floor plan is inch = 1 foot, what is the actual length of her.

Section 6.6 Scale Drawings

Learn to understand ratios and proportions in scale drawings

4-6 Scale Drawings and Scale Models Warm Up Warm Up Lesson Presentation Lesson Presentation Problem of the Day Problem of the Day Lesson Quizzes Lesson.

6.2 Use Proportions to Solve Geometry Problems Hubarth Geometry.

Splash Screen. Lesson Menu Five-Minute Check (over Lesson 6–6) Then/Now New Vocabulary Key Concept: Similar Triangles Example 1: Find Measures of Similar.

7-6 Scale Drawings and Maps Warm Up Warm Up Lesson Presentation Lesson Presentation Problem of the Day Problem of the Day Lesson Quizzes Lesson Quizzes.

Ms. Drake 7th grade Math Fractions Lesson 46 Scale Drawings and Scale Models.

6.2 Warm Up Warm Up Lesson Quiz Lesson Quiz Lesson Presentation Lesson Presentation Use Proportions to Solve Geometry Problems.

4-6 Scale Drawings and Scale Models Lesson Scale Drawings and Scale Models Warm Up Write the two requirements needed for two figures to be SIMILAR:

Scale Drawings and Scale Models

Scale Drawing and Scale Models

7.5(A) Generalize the critical attributes of similarity, including

7.1 OBJ: Use ratios and proportions.

Scale Drawings TeacherTwins©2014.

Learn to understand ratios and proportions in scale drawings

Scale and use scale drawings to solve problems.

REVIEW PROBLEMS = = • 102 = • 102 = Write in Standard Form.

Today’s Lesson: Scale proportions What: Why:

Maps and scale drawings are:

A scale drawing is a drawing in which all parts of the drawing are reduced or enlarged by the same scale factor. A scale is a ratio that compares the measurements.

Scale Factor TeacherTwins©2014.

3.6 Cross Products.

Maps and Scale Drawings

Warm Up Problem of the Day Lesson Presentation Lesson Quizzes.

Scale Drawings and Scale Models

Scale Drawings and Scale Models

Goal: The learner will use proportions to find measures of objects.

Warm Up Problem of the Day Lesson Presentation Lesson Quizzes.

Warm Up Write each fraction in the simplest form

Insert Lesson Title Here

REVIEW PROBLEMS = = • 102 = • 102 = Write in Standard Form.

(-) + (-) = ? (+) x (+)= ? (-)+(+)= ? Ticket in the Door

Bellwork A scale model of the Statue of Liberty is 15 inches tall. If the Statue of Liberty is 305 feet tall, find the scale of the model. A map has.

Warm Up Problem of the Day Lesson Presentation Lesson Quizzes.

Presentation transcript:

= Divide each measure by the GCF, 3. drawing length actual length Scale Drawings LESSON 7-5 Additional Examples The length of a drawing of a kitten is 3 cm. The actual length of the kitten is 27 cm. What is the scale of the drawing? = Divide each measure by the GCF, 3. 3 cm 27 cm 1 9 drawing length actual length The scale is 1 cm to 9 cm, or 1 : 9.

Step 1 Write the scale as a ratio: . 1 inch 20 miles Scale Drawings LESSON 7-5 Additional Examples Use a map scale of 1 in. : 20 mi to find the actual distance of 3.4 in. Step 1 Write the scale as a ratio: . 1 inch 20 miles Step 2 Find the number of miles represented by 3.4 in. Let y = the actual distance represented by 3.4 in. map distances actual distances = 1 in. 20 mi 3.4 in. y mi 1y = 20 • 3.4 Write the cross products. y = 68 Multiply. The actual distance is 68 miles.

Write the scale as a ratio. model (cm) actual (m) Scale Drawings LESSON 7-5 Additional Examples Suppose you are making a model of an 18-meter boat. Use a scale of 1 cm : 2.5 m to find the length of your model boat. Write the scale as a ratio. model (cm) actual (m) 1 2.5 Use to represent the model length. actual lengths 1 2.5 18 = 1 • 18 = 2.5 • Write the cross products. 18 = 2.5 Multiply. Divide each side by 2.5. 18 2.5 = 7.2 = Simplify. The model will be 7.2 cm long.