Unit Ratios and Rates in Context

Bobby, also known as Spark Plug, introduces unit ratios in his garage. He explains what unit ratios are, provides examples, and discusses their real-life applications. Bobby demonstrates how to write equivalent unit ratios using scale factors and solve problems using unit ratios and unit rates. The lesson concludes with a summary and additional resources for further learning.

What nickname does Bobby's friends use for him?

• Spark Plug

• Lightning

• Turbo

• Flash

What is a unit ratio?

• A ratio with no terms

• A ratio with two terms

• A ratio where one term is 1

• A ratio where both terms are equal

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

• 2 teachers for 5 students

• 1 teacher for 3 students

• 3 teachers for 1 student

• 5 teachers for 2 students

How can unit ratios be used in real life?

• To determine the volume of a cube

• To calculate the area of a circle

• To find the perimeter of a square

• To measure speed in miles per hour

What is the unit ratio for speed if a car travels 84 miles in 1 hour?

• 84 miles per hour

• 90 miles per hour

• 70 miles per hour

• 60 miles per hour

What is the purpose of using scale factors in unit ratios?

• To simplify ratios

• To create new ratios

• To make ratios more complex

• To eliminate ratios

How do you write a unit ratio as a fraction?

• By adding the terms

• By subtracting the terms

• By dividing one term by the other

• By multiplying the terms

In the candy bar problem, what is the unit ratio for the cost per candy bar?

• 1 candy bar for $0.50

• 1 candy bar for $0.75

• 1 candy bar for $1.25

• 1 candy bar for $1

What is the unit rate in the candy bar problem?

• $0.50 per candy bar

• $0.75 per candy bar

• $1.00 per candy bar

• $1.25 per candy bar

In the car pushing problem, what is the unit ratio for distance per hour?

• 20 miles per hour

• 5 miles per hour

• 15 miles per hour

• 10 miles per hour