Do Now 1/17/12 Take out HW from Friday. Take out HW from Friday.  Practice worksheets 4.5 B & C Copy HW in your planner. Copy HW in your planner.  

Slides:

Advertisements

Similar presentations

Scale Drawings and Scale Models

Advertisements

Preview Warm Up California Standards Lesson Presentation.

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

3-5 HW: Pg #6-42eoe, 50-51, C 57. D.

EXAMPLE 4 Use the scale on a map Maps Use a metric ruler and the map of Ohio to estimate the distance between Cleveland and Cincinnati. SOLUTION From the.

Use the scale on a map Example 4 Use a metric ruler and the map of California to estimate the distance between Sacramento and Los Angeles. MAPS SOLUTION.

Quiz Use the properties of similar figures to answer 1 and 2:

Chapter 5 Section 2 Scale Drawings and Models

Scale Drawings.

Learning Target I can use proportional reasoning to solve scale drawing problems.

HW # 61 - Begin the Group Exam (Put this on a new TOC) Warm up Place your EXTRA CREDIT and your warm up page in the center of your table. Place your OLD.

Warm-up: Solve the proportion.

2.7 Solve Proportions Using Cross Products

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

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.

Maps and Scale Drawings

Do Now 2/24/11 Take out HW from last night. Take out HW from last night. Text p. 272, #10-36 evens, #44, & #47 Text p. 272, #10-36 evens, #44, & #47 Copy.

Scale Drawings & Proportions

Do Now 2/27/09 Take out HW from last night. Text p. 492, #10-48 evens Text p. 492, #10-48 evens Copy HW in your planner. Text page 498, #4-44 evens Text.

Lesson 6: Scale Drawings and Models

Find Actual Measurements

Do Now 10/11/11 In your notebook, consider the following: In your notebook, consider the following: On a bright sunny day, how can you determine the height.

Do Now 2/8/10 Copy HW in your planner. Copy HW in your planner.  Text p.  Text p. 272, #10-36 evens, #44, & #47 Be ready to copy POTW #2 Be ready to.

Do Now 3/28/11 Copy HW in your planner. Copy HW in your planner.  Text p.  Text p. 272, #10-36 evens Be ready to copy POTW #1 for the 4 th marking period.

Do Now 12/11/13 Take out HW from last night. Take out HW from last night. Text p.152, #6-24 evens, 27, 31, & 32 Text p.152, #6-24 evens, 27, 31, & 32 Copy.

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 Drawing - a two dimensional drawing that is similar to the object it represents. Scale Model - a three-dimensional model that is similar to the object.

Bellringers Math 7 11/13-16/12. Tuesday Nov. 13, Melvin can decorate 8 shirts in 3 hours. Write and solve a proportion to find the time it will.

Warm Up Problem of the Day Lesson Presentation Lesson Quizzes.

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

Use the cross products property

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

Do Now 1/5/12 Take out HW from last night. Take out HW from last night. Text p. 156, #14-38 evens, 43, 48, 49 Text p. 156, #14-38 evens, 43, 48, 49 Copy.

Do Now 3/7/11 Copy HW in your planner. Copy HW in your planner.  Text p. 228, #10-28 evens, evens  Quiz sections 5.2 & 5.3 Wednesday Be ready to.

Scale Drawings. Scale – The ratio that compares the measurements of the real object and its model. EX: 1 in = 6 ft Scale factor – written as a ratio without.

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.

Use the cross products property EXAMPLE 1 Write original proportion = x 6 Solve the proportion =. 8 x 6 15 Cross products property Simplify. 120.

6.2 USE PROPORTIONS TO SOLVE GEOMETRIC PROBLEMS Goal:You will use proportions to solve geometry problems.

Lesson 7-4 Pages Scale Drawings Lesson Check 7-3.

Do Now 2/24/10 Take out HW from last night. Text p. 295, #6-9 all, & 12 Text p. 295, #6-9 all, & 12 Copy HW in your planner. Text p. 295, #10-15 all Text.

PreAlgebra Farris * I can use scale drawings and construct scale drawings.

Do Now 1/13/12 Take out HW from last night. Take out HW from last night. Measurements of your bedroom (length & width) and at least 4 objects (bed, dresser,

Do Now 2/23/10 Take out HW from last night. Text p. 291, #8-20 all Text p. 291, #8-20 all Copy HW in your planner. Text p. 295, #6-9 all, & 12 Text p.

Do Now 3/10/11 Take out HW from last night. Take out HW from last night.  Text p. 299, #1 & 2 Copy HW in your planner. Copy HW in your planner.   Text.

Similar Shapes and Scale Drawings

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:

Solving proportions.

Scale Drawings and Scale Models

7.1 OBJ: Use ratios and proportions.

Scale Drawings TeacherTwins©2014.

A man who is 6 feet tall is standing near a cactus

Learn to understand ratios and proportions in scale drawings

Scale Drawings Bell Ringers

Section 8.1 Ratio and Proportion

Section 8.1 Ratio and Proportion

Maps and scale drawings are:

Use Proportions to Solve Geometry Problems

The distance on the map or drawing or the actual distance.

Solve Proportions Using 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

Warm Up Problem of the Day Lesson Presentation Lesson Quizzes.

Warm Up Write each fraction in the simplest form

Insert Lesson Title Here

HW L10-3 pg 392 #8-14 L10-3 Notes: Scale Drawings and Models

Warm Up Problem of the Day Lesson Presentation Lesson Quizzes.

Presentation transcript:

Do Now 1/17/12 Take out HW from Friday. Take out HW from Friday.  Practice worksheets 4.5 B & C Copy HW in your planner. Copy HW in your planner.   Text p. 174, #1-12 all, 15, 16, 19, & 20   Measurements of your bedroom (length & width) and at least 4 objects (bed, dresser, desk, etc…)   Quiz sections 4.4 – 4.6 Friday   Chapter 4 Test Tuesday 1/24 Be ready to copy POTW #7 Be ready to copy POTW #7

Homework Practice worksheet 4.5 B & C 1) 60 cm 2) 44° 3) 21° 4) 12 in 5) 2.8 ft 6) 16.5 ft 1) 21.6 yd 2) 56° 3) 26° 4) 22.1 m 5) 9.5 meters 6) 28 feet 7) 225 inches 8) 112 feet

Objective SWBAT understand ratios and proportions in scale drawings and use ratios and proportions with scale

Section 4.6 “Scale Drawings and Scale Models” SCALE DRAWING- A proportional two-dimensional drawing of an object. Its dimensions are related to the dimensions of the actual object by a ratio called the SCALE FACTOR.

Identify the scale factor Width (in.)‏ 18144Length (in.)‏ BlueprintRoom blueprint length room length = = A scale factor is always the ratio of the model’s dimensions to the actual object’s dimensions. Caution! 318Wing span (in.)‏ 212Length (in.)‏ BlueprintModel Aircraft blueprint length aircraft length = 2 12 = 1616

SCALE - the SCALE of a drawing, map, or model relates the dimensions of the drawing, map, or model to the actual dimensions. Write and solve a proportion to find the distance d between Cleveland and Cincinnati if the distance on the map is about 4.2 centimeters. Write and solve a proportion to find the distance d between Cleveland and Cincinnati if the distance on the map is about 4.2 centimeters. = 4.2 d 1centimeters 85 kilometers Cross products property d = 357 Simplify. 1 d =

SCALE MODEL- A proportional three-dimensional model of an object.

A dinosaur model kits sold at a hobby store has a scale of 1 ft : 25 ft. A completed model of the dinosaur is 1.6 feet long. Estimate the actual length of the dinosaur. A dinosaur model kits sold at a hobby store has a scale of 1 ft : 25 ft. A completed model of the dinosaur is 1.6 feet long. Estimate the actual length of the dinosaur. Write and solve a proportion to find the length g of the dinosaur. =1.6 g 125 Cross products property g = 40 Simplify. 1 ∙ g = 25 ∙ 1.6 SOLUTION The actual length of the dinosaur is about 40 feet.

A model of a space shuttle has a scale of 1 : 52. The space shuttle has a wingspan of 78 feet. Find the model’s wingspan. A model of a space shuttle has a scale of 1 : 52. The space shuttle has a wingspan of 78 feet. Find the model’s wingspan. Write and solve a proportion to find the wingspan w of the space shuttle. = w Cross products property 1.5 = w Simplify. 1 ∙ 78 = 52 ∙ w SOLUTION The wingspan of the model is 1.5 feet.

A scale drawing of a basketball court has a scale of 1 inch : 9 feet. The basketball court is 94 ft by 50 ft. Find the dimensions of the court in the scale drawing. L = 10 4/9in 1 ∙ 94 = 9 · L W = 5 5/9in 1 ∙ 50 = 9 ∙ W

A scale drawing of a basketball court has a scale of 1 inch : 9 feet. The free throw line is 15 feet from the backboard. How far is it in the scale drawing? b = 1 2/3in 1 ∙ 15 = 9 · b

Homework Text p. 174, #1-12 all, 15, 16, 19, & 20 NJASK7 Prep