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

 

How much food is wasted?

rade level: 4th – 5th grades

Skills: Multiplication

Related environmental issues:  Reduce, Reuse, Recycle

Have you ever thrown away food after you felt full and stopped eating? In the United States, 30% of edible food is spoiled and thrown away.  That is as big as each person throwing away $494 every year.

  1. You have 4 people in your family. How much can your family save in a year if food is not wasted at all?
  2. What can you do to prevent food waste?

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Sources: U.S. EPA (2016). Sustainable Materials Management Program Strategic Plan. page 6.

Note) The food waste (and loss) is equivalent to $161 billion annually.

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Answer keys

  1. $1,9764  (94 x 4 = 1,976)
  2. Answer may vary:Don’t over-serve food, Save and eat leftovers,Vacuum-pack unprepared or pre-cooked ingredients, Store food properly, Keep a record of your waste, Plan your meal before shopping