Exploring Scale Drawings and Scale Factors

The video tutorial covers the concept of scale drawings, explaining what they are and how scales are used to represent real-life objects in drawings. It provides examples, such as a kitchen and a van, to demonstrate how to calculate real-life dimensions from scale drawings and vice versa. The lesson emphasizes understanding the relationship between the scale and actual measurements, offering practical methods to apply these concepts.

What is one of the goals of today's lesson?

• To create a 3D model

• To understand the history of drawings

• To explain what a scale drawing is

• To learn about different types of drawings

Tags

CCSS.RI.6.3

CCSS.RI.7.3

CCSS.RI.8.5

CCSS.RI.9-10.3

CCSS.RI.9-10.5

What does a scale drawing represent?

• A 3D model of an object

• A two-dimensional representation of an object

• A written description of an object

• A photograph of an object

How does a scale drawing relate to the actual object?

• It shows only the width of the object

• It shows the object in a smaller or larger size proportionally

• It shows the object in its actual size

• It shows only the height of the object

Tags

CCSS.7.G.A.1

What is the scale used in the kitchen example?

• 1/2 inch represents 3 feet

• 1 inch represents 2 feet

• 1/4 inch represents 1 foot

• 1 inch represents 1 foot

Tags

CCSS.7.G.A.1

What is the first step in finding the perimeter of the kitchen using the scale drawing?

• Find the perimeter on the scale drawing

• Measure the width of the kitchen

• Measure the height of the kitchen

• Convert the measurements to real-life size

Tags

CCSS.3.MD.D.8

How many times larger is the real-life kitchen compared to the scale drawing if 1/2 inch represents 3 feet?

• 15 times

• 20 times

• 10 times

• 17 times

Tags

CCSS.7.G.A.1

What is the real-life perimeter of the kitchen if the scale drawing perimeter is 8.5 inches?

• 45 feet

• 54 feet

• 48 feet

• 51 feet

Tags

CCSS.7.G.A.1

What is the real-life length of the van?

• 6 meters

• 4 meters

• 5 meters

• 3 meters

Tags

CCSS.2.MD.A.3

What scale is used for the van drawing?

• 5 centimeters represents 1 meter

• 2 centimeters represents 1 meter

• 3 centimeters represents 1 meter

• 4 centimeters represents 1 meter

Tags

CCSS.7.G.A.1

How long should the van be on the scale drawing if it is 5 meters in real life?

• 30 centimeters

• 25 centimeters

• 20 centimeters

• 15 centimeters

Tags

CCSS.7.G.A.1