Unit Rates and Scale Factors

The video lesson covers unit rates and scale factors, explaining how they relate to proportionality. It includes two examples: one involving sketches and stickers, and another with app icons. The lesson provides steps to check proportionality and emphasizes the importance of organized notes for an upcoming quiz.

What is the main topic of today's lesson?

• Unit rates and scale factors

• Fractions and decimals

• Statistics and probability

• Geometry and algebra

Which of the following is an example of a unit rate?

• Liters per gallon

• Dollars per pound

• Kilograms per meter

• Miles per hour

How are unit rates and scale factors related?

• They are both constants of proportionality

• They are unrelated concepts

• Unit rates are always larger than scale factors

• Scale factors are only used in geometry

What is the first step in finding a scale factor using measurements?

• List corresponding measurements

• Draw a diagram

• Calculate the area

• Convert all units to meters

In Example 1, what is the scale factor between the original sketch and the sticker?

• 3

• 0.5

• 1.5

• 2

What is the purpose of checking proportionality in scale drawings?

• To convert units

• To measure angles

• To find the area of the drawing

• To ensure the drawing is an accurate representation

In Example 2, what is the scale factor for the app icon?

• 1.5

• 2

• 1

• 0.5