What state used the largest amount of energy?

Grade level: 3rd – 4th grades

Skills: Expanded notation

Related environmental issues: Energy

 

The table below shows the average amount of energy used by a person in the top 10 energy using states in 2016.

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1. Arrange the states from greatest to least.

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2. How many even numbers do these numbers have?

3. Which state has a number closest in value to 490?

4.Which state has a number whose expanded notation is written as

(4 x 100) + (7 x 10) + (2 x 1)?

5. How can you write Indiana’s number in expanded notation?

Sources:U.S. Energy Information Administration

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Answer keys

  1. Screen Shot 2018-09-14 at 10.29.47 AM
  2. 3
  3. Iowa
  4. Texas
  5. (4 x 100) + (2 x 10) + (2 x 1)

Which car is clearer – Ford F150, Toyota RAV4 or Honda Civic?

Grade level:  5th grades

Skills:  Multiplication and division (decimals)

Related environmental issues: Air / Climate change / Energy

Area level: National, State, Regional, Household

Burning gasoline in motor vehicles is one of the biggest causes of air pollution in the United States. How much gasoline your car uses is strongly connected to how dirty the air in your area is. The table below shows how many miles three cars can run on one gallon of gasoline. Those three cars are the top-8 best-selling vehicles during the first half of 2018 in the United States.

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1. Which car can go half as far as Honda Civic on one gallon of gasoline?

2. An average American drives 280 miles a week. How much gasoline does an owner of each car use on average?

3. Which car among the three is more environmentally friendly? Why? Explain.

4. If the price of gasoline today is $3 a gallon, how much money does an owner of each car need to spend for gasoline in a week on average?

5. Which car among the three would you like to by? Why? Explain.

Source: 1) Business Insider, 2018 2) fuel economy.gov, 2018 3) U.S. Department of Transportation Federal Highway Administration, 2018

Note: Average Annual Miles per Driver: 13,476 miles (U.S. Department of Transportation, 2018)


Answer Key

  1. Ford F150
  2. Ford F150: 280 ÷ 16 = 17.5 (gallons)   Toyota Rav 4: 280 ÷ 25 = 11.2 (gallons)   Honda Civic:  280 ÷ 32 = 8.75 (gallons)
  3. Honda Civic: It uses less gasoline and emits less air pollutants into the air.
  4. Ford F150: 17.5 x 3 = $52.5  Toyota Rav 4: 11.2 x 3 = $33.6  Honda Civic:  8.75 x 3 = $26.25
  5. Answers may vary