How many people live in places with bad air quality?

Grade level: 3rd – 5th grades

Skills: Percentage

Related environmental issues: Air quality

The World Health Organization (WHO) reported that 92% of the world’s population lives in places that are below the air quality standard. As air quality declines, the risk of diseases such as stroke, heart disease, lung cancer, and asthma increases for the people who live in the area.

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Air quality map — Areas in red have hazardous air quality

 

 

Suppose your school has 100 children in your grade and 92% of them lives in places that are below the air quality standard.

  1. Our of 100 children, how many children live in places that are below the air quality standard?
  2. Our of 100 children, how many children live in places that are above the air quality standard?

 

Sources: WHO, Media Center

WHO, Global ambient air pollution (Interactive map)

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Answer keys

1. 92

2. 100 – 92 = 8

 

 

Did the United States add more renewable energy or non-renewable energy in 2017?

Grade level: 5th – 6th grades

Skills: Circle graph & Percentages

Related environmental issues: Energy 

The United States added about 24,600 megawatts of energy by building new renewable energy and non-renewable energy facilities during 2017.  The circle graph below shows percentage of renewable energy and non-renewable energy.

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  1. Which energy did the United States add more, renewable energy or non-renewable energy?
  2. How much of renewable energy in megawatts did the United States add in 2017?

 

Sources: Federal Energy Regulatory Commission, 2018. Office of Energy Projects Energy Infrastructure Update

 

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Answer keys

1. Renewable energy

2. 12,546 megawatts    24,600 x 0.51 = 12,546