Lesson 1: The Burj Khalifa

Open Ended

Why is it important to learn how to estimate measurements, such as the height of buildings or trees, in real-life situations?

Multiple Choice

Which of the following is a useful strategy when estimating the height of an object using a reference?

• Comparing the object to a known reference

• Guessing without any reference

• Ignoring proportions

• Using random numbers

Multiple Choice

If a window-washing crew can finish 15 windows in 18 minutes, how many windows can they finish in 1 hour?

• 50

• 45

• 60

• 30

Multiple Choice

Which of the following situations can be modeled using equivalent ratios?

• A bus stop serviced by 4 buses per hour

• A washing machine that takes 45 minutes per load of laundry

• A school cafeteria that serves 15 students per minute

• All of the above

Multiple Choice

How many minutes does it take for the cafeteria to serve 60 students?

• 1

• 4

• 15

• 40

Open Ended

An elevator travels 310 feet in 10 seconds. At that speed, how far can this elevator travel in 12 seconds? Explain your reasoning.

Open Ended

Han earns $33.00 for babysitting 4 hours. At this rate, how much will he earn if he babysits for 7 hours? Explain your reasoning.

Open Ended

The cost of 5 cans of dog food is $4.35. At this price, how much do 11 cans of dog food cost? Explain your reasoning.

Open Ended

A restaurant has 26 tables in its dining room. It takes the waitstaff 10 minutes to clear and set 4 tables. At this rate, how long will it take the waitstaff to clear and set all the tables in the dining room? Explain or show your reasoning.

Multiple Choice

A sandwich shop serves 4 ounces of meat and 3 ounces of cheese on each sandwich. After making sandwiches for an hour, the shop owner has used 91 combined ounces of meat and cheese. How many sandwiches were made in the hour?

• 11

• 13

• 7

• 21

Multiple Choice

Based on the image, estimate the height of Hyperion, the tallest known tree, compared to the Statue of Liberty.

• About the same height as the Statue of Liberty

• Twice the height of the Statue of Liberty

• Three times the height of the Statue of Liberty

• Half the height of the Statue of Liberty

Open Ended

How can thinking about 'how much for 1' help you solve different types of problems related to estimating heights or measurements?

Multiple Choice

Match each quantity in the first list with an appropriate unit of measurement from the second list.

• A - 4, B - 5, C - 2, D - 6, E - 1, F - 3, G - 7

• A - 1, B - 5, C - 2, D - 6, E - 4, F - 3, G - 7

• A - 4, B - 6, C - 2, D - 5, E - 1, F - 3, G - 7

• A - 4, B - 5, C - 3, D - 2, E - 1, F - 7, G - 6